I was going to do it as a hobby but my very first unit (2 actually from same owner) that I bought for a little over $2k netted me close to $100k. Still my best score but I get a few a year that net me over $10k and a couple that have netted me around $30k. I've taken big losses too though. It's a gamble and there is a science to it. But if you know what you're doing and have the balls to gamble big you can win big but have to be willing to lose big on occasion too plus sludge through all the crap. I've taken some decent losses lately but it's all part of the game. Although I am getting bored with it. When the adrenaline rush of a $10k unit starts feeling like nothing the fun is fading plus it's tough on the back and body moving heavy stuff a lot. I'm really thinking of transitioning into a numismatic job of some sort. My back is getting tired of storage units. The rush and thrill is awesome though. But its a gamblers game for sure.
I took the coin back and looked it over after the drop. It was unchanged and as an AU Peace for $25 I was OK. I really just wanted to strike up some convo while buying something. I just didn't like the vibe as it all progressed though. Even now knowing the law I have no plans of returning after that exchange.
Every time you make a purchase anywhere using any medium other than cash you have become part of a record accessible by "the man". Credit card, debit card, money order, personal check; makes no difference. You can be identified and your activity and transactions can be tracked and traced. The only possible exception I can think of is a gift card purchased by someone else and given to you; but even that could be traced through the buyer if they're able and willing to give you up.