Yeah.  You don't have to go that route dude.  At all.

Time to discover a place that takes payments near the second longest river in the world, my friend.  PM me if you need more help figuring it all out.

Rebate cards = Cash in your pocket for the total amount.  No flubbing around with keeping records of which card has what left on it.

As for power supplies on the cheap, take a look at dogie's thread.  There's a link to regularly updated pricing in my signature.