I must've got lost here...do you mean to tell me that you are essentially being paid $250 to take $1750 worth of computer stuff off their hands?

they can't possibly make that back in interest on your cash tied up in rebates, (can they?
I don't want to get to far into rebate theory, but no, they don't make money on me and interest is never a consideration for them.
The real good deals usually combine multiple coupons, pricematch matches, and rebates. When I bought Turbotax this year, I ended up buying TurboTax, Quicken, two virus scan software packs, some SPAM killer software, a scanner, and a 48x CD burner. My order was over $300 with sale prices. After rebates and coupon codes, I think I made about $25. I sold my 32x burner for about $25 on eBay, so I came out $50 ahead with a new burner, spare scanner, and needed tax software.
Another set of orders was for a Wireless router, wireless PC card (laptop), and a wireless USB adapter. Retail on them comes to about $300. I paid about $250 upfront, immediately pricematched that down to about $152, then sent in $125 in rebates. Final cost was about $27.
FW is a good place to track down normal computer hardware that you need.