This is a blatant scam; no pics of proof incredibly low price and decreases the price even more for not using secure escrow; DO NOT BUY!
I think guys the OP is legit, I checked his all past posts and seems that he had (Not sure if he still has) the same macbook pro,
https://bitcointalk.org/index.php?topic=1235104.msg12858587#msg12858587 and since the OP is accepting escrow I think people should not be worried (if we are talking for the same macbook). OP can you confirm that this is the macbook that you are going to sell?
That's correct.