Buying binned HW is not for everyone since some can do it on their own ,have resources ,time and patience but there are others...less fortunate bunch ,i only bought one binned CPU (my last one from Silicon L) and two binned memory kits back in the days from Sam and another (ass-hole) member here .I don't regret the choice I made since I'm happy with both my purchases which were trustworthy and return was acceptable not to mention one kit which was not what it supposed to be (money lost) ,so I don't see problem with buying or selling binned HW for premium as long as you getting what you payed for .
When it comes to NewEgg CPU's ,no you can't get refund but you will get replacement (rotation),mater of a fact is that most major retailers will do that in US,so when you decide to bin from particular place you need to understand that you will end up actually buying the product -returns are limited and the whole procedure is very time consuming since you have to send it back and wait for replacement -not worth it,with memory I never had a problem getting my money back (Egg Prime comes handy ),I see few ppl mentioning Galax memory being overpriced ..made me smile especially with all that B-die nonsense ..you not only getting top shelf manually binned B-,you getting thicker PCB and pretty much collectors item for like 50$ more what I payed for my Geil which is very similar and they don't sell them here in US anymore.. once again it's not for everyone ,just my 2c