I'm buying a new 24-105 L IS lens this week from one of the major online camera shops (IE Beach Camera, B&H photo, Abes, etc.) and was wondering how you can tell if the box has been opened and if the lens is a return or not? I know there are no seals on the box, so how can I be sure this isn't a bad return lens that's been carefully packed back up and sent out to me?
What do they usually do with returns like this? I know with the rebates that lens sales are higher right now, so the possibility of them re-selling a lens as opposed to returning it to Canon because of low inventory may be a possibility, but is this just me being paranoid about buying an expensive "L" Lens and being stuck with a lemon. Don't get me wrong, I plan on testing the lens out, but I'm just an amatuer and can't be 100% sure I'm checking everything correctly. I just want a NIB lens like I paid for.
Any comments or feedback is appreciated!! I plan on testing my lens in Sedona AZ a few days after I get it, so the oppurtunity will be there to give it a workout....
I believe Canon does not put any seal on the boxes, so I guess there is no way to know if it has been opened or not.

