is the best move to upgrade my phone to the Droid Eris for free(after rebate and 2 year contract price discount) with Verizon, go to a Sprint kiosk, sign up for service, move my number, go back to the Verizon kiosk and the same day cancel my contract, pay the early termination fee of $175 and then sell the phone on Ebay for $400? Am I missing something here?