I don't think this info has been posted yet. Someone over on FW pointed out that there is another rebate for $20 (offer #02-50051) on the Maxtor 30GB 7200 on the RebateHQ.com web site, but like the $30 office Depot rebate (offer#02-58515) that also goes to RebateHQ.com they both clearly states that
copies of the UPC code will not be accepted, so getting the $20 rebate is a very, very big YMMV, and I would atvise anyone against buying this HD thinking they are buying a $10 HD, it's a $30 HD that if you are very lucky you might get another $20 back.
Yes, I know RebateHQ has approve rebates with copies of UPC codes in the past, I have done a few myself, but those rebate forms did not say that copies of the UPC code will not be accepted.
This link is to the on-line rebate submittion form if you complete the form the rebate request will be send to RebateHQ, you cannot print it out and mail it in later, so don't complete the submittion form until you want to send in the $20 rebate, because if they receive your $20 rebate first they might reject your $30 rebate when they receive it.
Link to $20 rebate form