Also, bear in mind, it appears that many of these online stores have their employees or others make up positive reviews. I bought a lens from a company that had around an 8/10 rating, and darned near got screwed royally. It took 2 months and a very real threat from me, to finally get what I ordered. Before buying from anyone, check out the "buyer dealer feedback", board on this forum or post an inquiry. Someone here may be able to give you a thumbs up or thumbs down.

Good luck.