I noticed that the rebate also says item 290393 which is 32x Neon CD-R 700 MB/80 Min 50-pk Spindle for $19.99 which would be $6.99 after rebate if you need some 32X.
edit: Ian@CDRlabs - I am sorry if you have not received your CompUSA rebates but I have gotten every one I have ever applied for and I have applied for dozens over a course of several years (one $50 monitor one I even got three times) .