You need a lot of high value junk. Which is harder than it was when they first released this update to beta (some abnormally high stuff now sells for less than it did). If you really wanted to focus on it you could get it up to 40-50k a day probably.Yes, but I can get around 10k coins per day (in best case scenario). So it would take me 200 days to be able to buy one thing, even if I had infinite junk to sell
BUT, this iteration has been scrapped and is not going live. So best just wait and see what they come up with next before planning around it.

