How do you guys make money off of cards?

I've recently been trying to buy packs to pull money cards, but it hasn't been working. Have spent like 300 dollars, and the best I've pulled is SB of the Master. No bears, megalos, hpops, geargigants, diamond dires, even though I bough a lot of abyr, redu, and cblz. Have tried the SE Box, the random SE strategy, but all of the pulls have been somewhat lackluster. Advice?