[bensie]

What you propose is a very difficult thing to accomplish reliably. The number one advice I'd give is to establish a relationship with an auction house and negotiate favorable rates. If you don't or can't, auction fees will eat up all of your profits and then some.

I've had a small amount of success flipping, but it's a real grind. I would routinely put in over $100k worth of bids on cards only to come up empty or to get a card that would flip for a couple hundred bucks. I did that for a couple months, but it's not fun nor is it worth the time. I went back to simply buying cards I like.

When I talk to people about it, I liken it to card counting in blackjack. When I was young, I was pretty decent at counting cards and could reliably make money. However, I was spending full days in the casino and it was boring as hell. I then decided to give it up and just get a real job since the time investment was about the same and the money wasn't much different. Same story with cards. Gave up the flipping and am focused on other ways to make money.

To put it succinctly: there's no free lunch.