200+ Questions Answered

Ecommerce FAQ 2026: Amazon, eBay, Etsy, Shopify, Stripe & More

Instant answers to 200+ ecommerce questions — Amazon FBA fees, Stripe rates, Shopify costs, eBay charges, and key metrics. Each answer links to a free calculator.

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Ryan Cole — Ecommerce consultant with 8+ years in Amazon FBA and marketplace analytics. Last updated: April 2026. About the author

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Amazon FAQs

Everything about Amazon FBA fees, referral fees, fulfillment costs, PPC advertising, and selling on Amazon Seller Central.

What is

Amazon FBA

FBA handles storage, picking, packing & shipping for $3.22–$6.50/unit

 What is

Amazon Referral Fee

6–17% of sale price depending on category

 What is

Amazon Fulfillment Fee

Fulfillment fee $3.22–$6.50/unit + storage $0.78–$2.40/cu ft

 What is

Amazon Closing Fee

$1.80/media category per item sold

 What is

Amazon Storage Fee

$0.78–$2.40/cu ft monthly, higher for long-term

 What is

Amazon VAT

VAT on sales in UK/EU, rates 17–27% by country

 How to

Calculate Amazon FBA Fees

Use FBA calculator: multiply units × $3.22–$6.50 + storage

 How to

Calculate Referral Fee

Sale price × category % (typically 8–15%)

 How much

Does Amazon Charge

Referral 6–17% + FBA $3.22–$6.50/unit + storage

 How much

Is Amazon FBA

~$3–15/unit depending on size + $0.78–$2.40/cu ft

 Is it worth

Amazon FBA Worth It

Worth it for Prime eligibility & hands-off fulfillment

 Is it worth

FBA Profitable

Typical net margin 15–30% after FBA fees

 How to

Reduce Amazon Fees

Use FBM for heavy items, optimize packaging size

 Why

Are Amazon Fees So High

Covers fulfillment, storage, customer service, Prime access

 What is

Amazon PPC

CPC ads on Amazon search, fees $0.02–$50+/click

 How to

Use Amazon PPC

Set daily budget, target keywords, optimize bids

 Is it worth

Amazon PPC Worth It

Worth it with ROAS 3–5x or higher

 What is

Buy Box

Right to sell at a price, 82% of sales

 How to

Win Buy Box

Price, fulfillment, seller rating, stock

 How to

Get Amazon Reviews

Request reviews via Amazon's automated system

 How to

Optimize Amazon Listing

Keyword-rich title, bullets, images, A+ content

 How to

Research Amazon Keywords

Helium 10, Jungle Scout, Amazon autocomplete

 What is

BSR

Lower BSR = higher sales in that category

 What is

A+ Content

Brand story with images, text; increases conversion 3–10%

 Best

Amazon FBA Reimbursement

Claim refunds for lost/damaged inventory

 What is

MCF

Use Amazon warehouses to ship non-Amazon orders

 What is

ASIN

10-char product ID on Amazon marketplace

 What is

SKU

Seller-defined alphanumeric product identifier

 What is

UPC

12-digit barcode required for Amazon listings
Calculate your FBA fees free
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eBay FAQs

Everything about eBay final value fees, insertion fees, store subscriptions, promoted listings, and international selling.

What is

eBay FVF

13.25% of sale price, max $750/transaction

 What is

eBay Insertion Fee

First 250/month free, then $0.35/item

 What is

eBay Store Subscription

$4.95–$74.95/month with fee discounts

 How to

Calculate eBay Fees

FVF 13.25% + PayPal 2.9% + $0.30

 How much

Does eBay Charge

13.25% FVF + $0.30 per transaction

 How much

Is eBay Final Value Fee

13.25% of total sale including shipping

 How to

Reduce eBay Fees

Subscribe to eBay store for 11.7% discounted FVF

 Why

Are eBay Fees So High

Covers buyer protection, platform, payment processing

 Is it worth

eBay Worth It

Worth it for C2C and collectibles with large audience

 Best

eBay Fee Discount

Store subscribers save up to 40% on FVF
Calculate your eBay fees free
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Etsy FAQs

Everything about Etsy listing fees, transaction fees, payment processing, advertising, and selling on Etsy in 2026.

What is

Etsy Listing Fee

$0.20 per item, renews every 4 months

 What is

Etsy Transaction Fee

6.5% per sale + 3%+$0.25 payment processing

 What is

Etsy Payment Processing

3%+$0.25 per transaction for US sellers

 How to

Calculate Etsy Fees

$0.20 + 6.5% + 3%+$0.25 per sale

 How much

Does Etsy Charge

~$10.35% total: $0.20 + 6.5% + 3%+$0.25

 How much

Is Etsy Transaction Fee

6.5% of item price + shipping + gift wrap

 How to

Reduce Etsy Fees

Use Etsy Ads carefully, optimize listings to reduce relisting

 Why

Are Etsy Fees So High

Covers marketing, payment, 24/7 support

 Is it worth

Etsy Worth It

Worth it for handmade/craft products with loyal audience

 Is it worth

Etsy Ads Worth It

Worth it if ROAS exceeds 3–5x on ad spend
Calculate your Etsy fees free
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Shopify FAQs

Everything about Shopify monthly fees, transaction fees, pricing plans, and setting up your Shopify store.

What is

Shopify Monthly Fee

$39–$399/month for standard plans in 2026

 What is

Shopify Transaction Fee

2.9%+$0.30 with Shopify Payments

 How to

Calculate Shopify Costs

Monthly fee + transaction fees + payment processing

 How much

Does Shopify Cost

$39–$399/month + 2.9%+$0.30 per transaction

 How much

Is Shopify Transaction Fee

2.9%+$0.30 online, 2.7%+$0 in person

 Is it worth

Shopify Worth It

Worth it for independent stores with $5k+/month revenue
Calculate your Shopify costs free
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Payment Processor FAQs

Everything about Stripe fees, PayPal fees, chargebacks, payment gateway selection, and reducing payment costs.

What is

Stripe Fee

2.9%+$0.30 per online transaction in US

 What is

Stripe Chargeback

$15 fee per chargeback dispute

 What is

PayPal Fee

3.49%+$0.49 per standard transaction

 What is

PayPal Chargeback

$20 chargeback fee for merchants

 How to

Calculate Stripe Fees

2.9%+$0.30 × transaction volume

 How to

Calculate PayPal Fees

3.49%+$0.49 × sale amount

 How much

Does Stripe Charge

2.9%+$0.30 per successful charge

 How much

Does PayPal Charge

3.49%+$0.49 per standard transaction

 How much

Is Stripe Per Transaction

$0.30 + 2.9% of transaction amount

 How much

Is PayPal Per Transaction

$0.49 + 3.49% of transaction amount

 How to

Reduce Stripe Fees

Use Stripe volume discounts, ACH for large transfers

 How to

Reduce PayPal Fees

Negotiate rates at $100k+/year volume

 Is it worth

Stripe Worth It

Worth it for online businesses needing reliable payments

 Is it worth

PayPal Worth It

Worth it for cross-border and PayPal user base

 When

To Use Stripe

Use Stripe for developer-friendly, API-driven payments

 When

To Use PayPal

Use PayPal when customers prefer one-click checkout
Calculate Stripe & PayPal fees free
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Metrics & KPIs FAQs

Everything about ROAS, ACOS, CAC, LTV, profit margins, churn rate, MRR, ARR, and other ecommerce metrics.

What is

ROAS

Revenue ÷ Ad Spend; good Amazon ROAS = 3–5x

 What is

ACOS

Ad Spend ÷ Ad Revenue × 100; target below profit margin

 What is

CAC

Total sales & marketing cost ÷ new customers acquired

 What is

LTV

Average revenue per customer × average customer lifespan

 What is

Profit Margin

Net margin = (Revenue − Costs) ÷ Revenue × 100

 What is

Gross Margin

Gross margin = (Revenue − COGS) ÷ Revenue × 100

 What is

Break Even Point

Revenue = Fixed Costs; units to break even = FC ÷ price

 What is

Churn Rate

Churn = Lost customers ÷ Total customers at start of period

 What is

MRR

Recurring revenue × months; core SaaS health metric

 What is

ARR

MRR × 12; standard SaaS growth metric

 How to

Calculate ROAS

ROAS = Revenue from Ads ÷ Ad Spend

 How to

Calculate ACOS

ACOS = Ad Spend ÷ Ad Revenue × 100

 How to

Calculate CAC

CAC = Total Sales & Marketing Cost ÷ New Customers

 How to

Calculate LTV

LTV = Average Purchase Value × Purchase Frequency × Lifespan

 How to

Calculate Profit Margin

Net Margin = (Net Profit ÷ Revenue) × 100

 How to

Calculate Gross Margin

Gross Margin = (Revenue − COGS) ÷ Revenue × 100

 How to

Calculate Break Even

Break-even units = Fixed Costs ÷ (Price − Variable Cost)

 How to

Calculate Churn Rate

Churn Rate = (Lost Customers ÷ Starting Customers) × 100

 How to

Calculate MRR

MRR = Active subscribers × ARPU per month

 How to

Calculate ARR

ARR = MRR × 12 months

 Best

Profit Margin Ecommerce

Avg net margin 5–15%; FBA sellers target 20–30%

 Best

Gross Margin Retail

Retail gross margin typically 30–60%

 Best

Conversion Rate Ecommerce

Avg conversion rate 2–4%; top performers 5–8%

 Best

Customer Acquisition Cost

LTV:CAC ratio of 3:1 or higher is healthy

 Best

CLV:CAC Ratio

3:1 CLV:CAC is healthy; above 5:1 is excellent

 Best

Churn Rate SaaS

Monthly churn 2–5% acceptable; below 2% is excellent

 Best

LTV:CAC Ratio

3:1+ LTV:CAC ratio indicates sustainable growth

 What is

Campaign ROAS

ROAS for a specific campaign: Revenue ÷ Campaign Spend

 What is

Target ROAS

Amazon's auto-bidding goal based on target ACOS

 What is

Blended ROAS

Combined ROAS across all ad channels
Calculate ROAS & ACOS free
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Business Model FAQs

Everything about dropshipping, wholesale, private label, retail arbitrage, print on demand, and choosing the right business model.

What is

Dropshipping

No inventory: supplier ships directly to customer

 What is

Retail Arbitrage

Buy low at retail, resell on Amazon/eBay

 What is

Wholesale

Buy products at bulk discount, resell individually

 What is

Private Label

Create your brand on generic products from manufacturers

 What is

Print on Demand

Print products only when ordered, no inventory

 Is it worth

Dropshipping Worth It

Profit margins 10–30% with low startup cost

 Is it worth

Retail Arbitrage Worth It

ROI 30–100% but time-intensive

 Is it worth

Wholesale Worth It

Worth it with $50k+ capital and reliable suppliers

 Is it worth

Private Label Worth It

Highest ROI potential but $5k–$30k startup

 How to

Start Dropshipping

Find supplier → Create store → Add products → Market

 How to

Find Winning Products

Use Jungle Scout, Helium 10, trending product tools

 How to

Source Products

Alibaba, trade shows, domestic wholesalers

 What is

TikTok Shop

In-app shop with live-stream commerce

 What is

TikTok Shop Fee

0–8% commission depending on category

 How much

Does TikTok Shop Charge

Seller fees 0–8% + payment processing

 Is it worth

TikTok Shop Worth It

Worth it for Gen Z audience, fast-growing platform

 What is

TikTok Affiliate

Earn 10–20% commission on affiliate sales

 What is

Amazon Affiliate

Earn 1–10% commission on referred sales
Calculate profit margins free
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Taxes & Compliance FAQs

Everything about VAT, GST, sales tax, customs duties, tariffs, import fees, and tax compliance for ecommerce sellers.

What is

VAT

17–27% sales tax in EU countries

 What is

GST

10% in Australia, 5% federal in Canada

 What is

Sales Tax

0–10.25% depending on US state and product category

 What is

Customs Duty

HS code determines rate, typically 0–20%

 What is

Tariff

US tariffs 0–25%+ depending on product origin

 What is

Import VAT

VAT on imports to UK/EU, 17–27% of declared value

 When

To Register for VAT

UK: £85,000/year; EU: varies by country

 When

To File Amazon Taxes

1099-K threshold: $20,000 or 200 transactions

 What is

Amazon VAT

VAT on Amazon services in UK/EU at 20% UK, 19% DE
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