buslink 52X24X52 for $19.99 after rebate at BestBuy.
-$50.00($30MIR from BestBuy & $20 from Mfr)
Total AR = $19.99
Lite-Ons are distinguishable by the smart-burn sticker on box and will have the LTR-XXXXXX code on the drives label.
Also you can try your luck with the 10% off coupon available here
This will bring the total ar down to $17.99 but YMMV