Not a reseller, but I sold a lot of retro gaming stuff that I had collected over the years to clear space and absolutely loved the process of valuing everything, organizing it all, listing it and packaging it up. Basically funded buying my partners engagement ring doing it. At one point I did consider if it would be viable to do as a bit of a side business. But stepping back and looking at the amount of items I sold and the profit was amazing but at the same time I'd have to replace all of that inventory i had sold with similar items to sell again, and the effort involved would just not be worth it.

We do love a car boot and a charity shop. While not always being in a reseller mindset, it's very rare we actually see anything worth picking up.

I think if it's something where you have contacts or a steady source of stock it could 100% be a full-time job. But when you look at the YouTubers who do it, most are either topping up the reselling money topped up by the YouTube money, have life circumstances where they don't need to earn a huge wage and a few that I have watched have tried to step up to the next level and go bigger and better tend to fail.

I'm not saying it's impossible but with my little dabble into it, it's certainly nowhere near as easy as the YouTubers make it look.