Hey Product Hunt 👋

I'm Erdem, the solo founder of QuantSeller.

I built QuantSeller after seeing the same problem again and again with handmade and Etsy products:

1. Sellers know their revenue, but not their real profit.

2. A product looks profitable until materials, labor, packaging, shipping, marketplace fees, discounts, and Offsite Ads are counted together.

3. Many makers end up pricing from intuition, competitors, or spreadsheets that get messy fast.

So I built QuantSeller.

QuantSeller is a profit and cost workspace for Etsy makers. It helps sellers:

• Build product cost structures from materials and BOMs

• Calculate real profit after labor, packaging, shipping, Etsy-style fees, discounts, and Offsite Ads

• Price products with full cost context instead of guessing

• Track Etsy performance and product profitability in one workspace

• Generate listing SEO and manage handmade workflows without jumping between spreadsheets

The aha moment is simple: before publishing or repricing a product, you can see what the product actually keeps after all hidden costs.

This launch focuses on the Etsy maker workflow. Amazon Seller Mode is also in beta, with FBA profit tracking, inventory visibility, competitor / Buy Box monitoring, and listing + order sync through Amazon SP-API coming shortly.

What I’d love feedback on:

- Is the pricing/profit workflow clear enough for Etsy makers?

- Which hidden cost do handmade sellers forget most often?

- Would you prefer a simpler calculator-first flow or a full workspace from day one?

Happy to answer anything here.

— Erdem