This deal is even better than I thought. The price on staples.com is still up, and this week, Staples has a spindle of Optimum 48x CDR's for $11 after instant rebate with a $10 mail in rebate. If you can find the $10 off $40 printable coupon, you pay about the same price, but you get the CDR's, and if the $10 rebate comes, you're that much more ahead. Net price is around $20 plus tax.
I just bought two of them. One for myself and one for a friend. I'll be flashing mine to 52x, today, and I'll probably sell my 48x Lite-On (also a re-flashed Memorex) for enough to break even on the deal.