Yeah, refurbishing things can be very profitable. I used to do the same thing with computers or other electronics several years ago. I would get non working computers or electronics either on Craigslist or I would scout eBay for non working electronic listings for dirt cheap and if it is a problem that I could fix, I would fix up the electronics or buy parts to replace the non working parts inside a desktop or laptop computer and resell the refurbished stuff for a tidy profit.

With basic tech knowledge, there is money to be made off refurbishing electronics. For example: there was this one time several years ago that I purchased a listing off eBay for a non working SSD (solid state drive for those who don't know what they are) which is like computer storage but significantly faster. This was an SSD worth over $300 back then and I bought it for $40 and all it needed was to be hooked up to a working computer and have it's firmware updated. I did this and made over a $200 profit for something that took me maybe 10 minutes to do.

So yeah, there is money to be made if you know where to look. I want to get back into doing these kind of things because I can't see myself working this job for an extended period of time because it is so freaking mindless that I'm getting bored due to lack of stimulation lol.