I made most of it before the AH was completely overrun with bots sniping any cheap item. Manually buying Str+Vit+AllRes armor or similar items that were listed for a fraction of their actual value is where I started, and then things like buying well-rolled legendaries that people listed for cheap because they didn't realize a 20% String of Ears is worth more than 500k because there's dozens of 10% Strings up for that much. I don't think you can still make anywhere near $15/hr unless you're running many AH bots or something but maybe there are still some super profitable niches out there. Nothing I did was all that secret or difficult, I just did it earlier than most people so there wasn't as much competition and the profits were higher.
u r so smart