Hey guys! So, earlier this morning I went to the Verizon store for my upgrade, and got myself a new Droid X. It was $299.99 with a $100 mail-in rebate. Now I see a post on here showing that amazon.com has an upgrade for only $49! So I'm wondering: can I just go back into the Verizon store tomorrow and return the phone, reverting back to my old one, then upgrade through amazon? Thanks for any/all help EDIT: Wanted to add that I did NOT yet send in the mail-in rebate.