Way to go. You have made some nice pick-ups. Auctions are the only way to go. The BIN's not so much. I missed out on a few deals earlier this evening including a Mauer base that went for less than $2.75. That's a steal.
My budget is $100 for a full box: Base / Jumbo relic / Relic auto, etc of PC players. I am trying to be picky with the edging on all of the cards I get. Good Luck with your next purchases.
Oakland A's: The team most players have on their no trade list.