I dont think it is very hard to do. Ive looked at all the write ups for taking apart the razr non of them look hard. I would at least try better then spending $100 or so for a new one. Also what phone you using right now? Do you have another one you can use ill switch the esn you.
why won't you ebay? people with hundreRAB and hundreRAB of feedback and located in the US are great to deal with i've never been scammed once, just make sure the person has more than 10 feedback and didn't send you an email with a link to a page outside of ebay
I've had a bad experience where eBay and PayPal screwed me and the scammer got away with A LOT of money that PayPal would not refund even though I went through the dispute process (I did issue a chargeback with my credit card and got the money back).