I bought a metal filing cabinet that would ordinarily go for $400-$500 online for $15 off of Craigslist. I also scoop up and repair free shit from the curb. FB Marketplace and Craigslist are a mixed bag between shitty and overpriced and ridiculously cheap for what the actual retail value would be.
Thrifting gets pricey nowadays. I've had better luck scouring FB Marketplace and Craigslist for curb alerts, if not trawling around the neighborhood looking for stuff to pluck up and take home myself. For free, even!