Seller guides that show the math, not just the motivation
The blog behind 150+ free calculators. We break down Etsy fees, Shopify margins, Poshmark take-home pay, Patreon tiers, Substack pricing, and Amazon FBA math in plain language. Every article links to a live calculator so you can test your own numbers in under 30 seconds.
What you will find here
- Etsy listing, transaction, and offsite ads fees explained with real examples
- How to price for 40% margin after Poshmark, Mercari, Depop, and eBay cuts
- Patreon tier pricing and Substack revenue models that hit monthly income goals
- Calculator tutorials so each tool becomes a decision, not just a number
New platforms covered
Our latest calculators for Poshmark, Mercari, Depop, Patreon, Substack, Kickstarter, and Twitch are live. Blog guides for these platforms are coming next in the authority clusters.
Category: Printify Guides
Printify Profit Calculator: How to Calculate True Margins with Base Costs, Shipping & Fees
Printify Profit Calculator: How to Calculate True Margins with Base Costs, Shipping & Fees Picture this: You've designed a killer graphic tee that's flyi...
Printify Pricing Guide: How to Price Print-on-Demand Products for Profit (2025)
Printify Pricing Guide: How to Price Print-on-Demand Products for Profit (2025) Picture this: You spot a hot design, upload it to Printify, and see a $9.50 b...
Next up
Etsy authority cluster is just getting started
Week 1 covered how Etsy fees actually work. Week 2 covered how to price for profit. Next: inventory turn, ads ROI, bundle pricing, and revenue forecasting — each article ships with a calculator walkthrough and transparent formula.