Guides for online sellers

Marketplace Fees · 6 min read

Amazon Seller Fees Explained (2026)

Every fee Amazon charges sellers in 2026 — referral fees by category, FBA, subscription and the extras — and how to work out your real profit per unit.

Marketplace Fees · 5 min read

Etsy Fees Explained (2026): What Etsy Takes From Every Sale

A clear breakdown of Etsy’s 2026 fees — listing, 6.5% transaction, payment processing and Offsite Ads — with a worked example and tips to protect your margin.

Marketplace Fees · 5 min read

eBay Fees Explained (2026): Final Value Fee, Per-Order Fee and Promoted Listings

How eBay’s 2026 seller fees work — the 13.6% final value fee, per-order fee, category rates and Promoted Listings — with a worked example.

Payment Fees · 4 min read

PayPal Fees for Business (2026) — and How Much to Charge

PayPal’s 2026 business fees explained: Checkout vs goods & services rates, international fees, and the formula to charge the right amount.

Payment Fees · 4 min read

Stripe Fees Explained (2026): Card Rates, International Fees and How Much to Charge

Stripe’s 2026 US card fees explained — 2.9% + 30¢, international and currency conversion add-ons, refunds and disputes — with examples.

Payment Fees · 4 min read

Shopify Payments Fees and Transaction Fees Explained (2026)

What Shopify charges per order in 2026: Shopify Payments card rates by plan, in-person rates, and the extra fee for third-party payment gateways.

Pricing & Profit · 5 min read

Profit Margin vs Markup: The Difference That Costs Sellers Money

Margin and markup explained with examples, a conversion table, and how to price products so you hit the margin you actually need.

Marketing & Ads · 5 min read

ACoS vs ROAS: What’s a Good Number for Your Ads?

ACoS and ROAS explained for Amazon, Walmart, Google and Meta sellers — how they relate, TACoS, and how to find your own break-even target.

Shipping & Logistics · 4 min read

Dimensional Weight Explained: Why Your Shipping Costs More Than It Should

How UPS, FedEx and USPS calculate dimensional weight, the divisors they use, and practical ways to cut your billable weight.

Shipping & Logistics · 5 min read

How to Calculate Landed Cost (With a Worked Example)

Calculate the true cost of imported products: product cost, freight, insurance, import duty and fees — plus why FOB vs CIF changes your duty.

Shipping & Logistics · 5 min read

Safety Stock and Reorder Point: When to Reorder Inventory

How to calculate safety stock and your reorder point from daily sales, sales variation and lead time — so you reorder before you run out.

Listing & Store Tools · 4 min read

Amazon Backend Search Terms: The 250-Byte Rule and How to Use It

How Amazon backend search terms work, why the limit is in bytes not characters, and what to include or leave out — with a cleanup example.