Upload & Sell: Off
For me it's all about disclaimers:
like - I am the second/third owner; and receipts, feedback on selling sites, etc, all do help.
Good pictures, and detailed explanation about lens condition helps, which show signs of the seller knowing what he has and talking about.
Ebay has been changing their policies - they do protect the buyer, and not so much the seller - thus the 'empty-box", "damaged item" and "brick-in-the-box retuen" scams, so popular these days.
Yes, boxes are just clutter, but in high priced items, just makes it nicer - I would not pay more for it either.
if you meet in person, it's easier to "read" the person.
So where's the box? - I just don't keep them or care for it. on CL I set a FIRM price - no bs, or will walk away, that simple.