so i'm a little surprised to find that on ebay this lens is much cheaper than what i've seen selling here. am i missing something? a lot of them are clearly stating that the lens are made in japan and what not but.. aren't they all? i guess i'm just double checking to see that it's all good and that i'm not missing some key information as to why they're cheaper. maybe it's that they're selling overstocked goods from japan? a lot of them seem to be shipping out of japan.