Built a Vinted fee calculator, it's live, $0 revenue so far

I shipped a fee and profit calculator for Vinted sellers a few weeks back. It works. It's live. Revenue is still basically zero, so take everything I say with that in mind.

What it does is boring on purpose. Vinted moved the buyer protection fee onto the buyer, so sellers keep the sticker price, but postage and what you originally paid for the item still eat the margin. Most people just guess. I got tired of guessing on my own listings, so I built the thing that does the math and tells you what you actually walk away with.

Traffic is a trickle. A handful of people from one thread, some direct hits I can't explain, nobody coming back twice that I can see.

So the real question for anyone here who's already past this part. What got you your first hundred users? Not the tidy version you'd write up afterward. The boring one. Did you camp in one community for months, cold DM people, pay for something that worked?

And if you've got two minutes, poke at it and tell me what's confusing or broken. https://vinted-fee-calculator-tan.vercel.app?utm_source=indiehackers&utm_medium=organic&utm_campaign=vintedcalc_202607