This will follow skyrim's CE in that it will eventually dip to below 100 for new copies from a trusted seller (Amazon, Toys r us, best buy whatever) then once the excess stock is sold out (i.e. when the big stores stop selling it by the bucket loads it will bounce back to 130 - 180 bucks
At least that's my opinion
I bought it at full retail and don't mind keeping it as I think it's pretty good value for money on a CE but what do I know