Technically, yes. You just have to know what to buy and how to price what you are selling. ("Oh, is that all?" says the broker who makes a living doing this. :) )
I had a friend who made decent money going to physical auctions and taking the items he bought and putting them on ebay (this was about a decade ago).
I had a friend who made decent money going to physical auctions and taking the items he bought and putting them on ebay (this was about a decade ago).
Arbitrage is here to stay.