I'm sorry but personally, it's EX or nothin' for me. I'm lucky and got in on the EX before it sold out!
Dude just bite the bullet and pay eBay prices later. Believe me, I've had to go the eBay route before on pieces that I've missed out on, and it hurts hard; but It was worth it though.
I'll probably end up going the eBay route again on the Master Chief EX that I missed out on.