I'm thinking of buy a refurb 27" i7 but I'm worried about what the deal is with returns. What If I get one that has a huge scratch on the back or something, can I still return it seeing as they do say there might be some cosmetic damage? Or if the yellow screen issue is still in play, can I return a refurb with no problems? Also, how do return work? I live nearly 80miles from the nearest Apple store, so would I send it to Apple or would they pick it up?