Best Buy will not honor the second $30 rebate for purchases made in-store.
I have checked the fine print in the terms and conditions section of the rebates printed from the BestBuy.com site, and it clearly states "In-store rebates are valid on in-store purchases only. BestBuy.com rebates are valid with online purchases only." The rebates printed out from www.bestbuy.com
are all marked as BestBuy.com rebates, so according to their terms they will not be honored for in-store purchases.
It looks like the only way to get this deal for $50 is if you ordered online before BestBuy.com removed the offer. Those of you who purchased the drive in-store are only eligible for the rebates printed out at the register, and thus will only get the drive for $80.
I hope that no one purchased this drive in-store expecting to get it for $50 and opened the package with that anticipation. If you haven't yet opened the package and don't want to pay $80 for it, return the drive to get a refund. And don't wait too long, I think hard drives only have a 14-day return policy.
Rats! I should have pulled the trigger straight-away and ordered when I first saw the deal.