I may be buying a used Epic from someone on craigslist. I'm going to have Sprint check the ESN and activate it on my line to make sure the phone ESN is clean. Of course I'll carefully check the screen / body for damages, etc. Are there anything else I should be looking for to make sure it's a good phone? I read on here various issues with Epics but not sure how to check the used Epic for any particular issues. And how much do you think a used Epic is worth? New ones go for $250 after $100 MIR. Should a used one (in good shape, clean, etc) be worth around $350? Thanks in advance for your help.