Bush

So I’m fairly new to leather working and am also looking for good stamps, as I bought a 20 pc set off eBay and my first thought when I saw them was I don’t think these will stamp. And man these are tiny, is that common to think? I can’t seem to find reviews on the ones I bought verses any others and that leads to being frustrated. I have found a guy in Bulgaria that has listings on eBay, Amazon, Etsy, that seem to be quality. Any insight on those stamps before I leap into buying internationally? They seem to be in the 20-50$ range and I believe are brass.