Where are all the reputable resellers getting their LVs?

Well, we all know the variety of places where fakers get their bags.. but the REAL sellers, Reputable (Mypoupette) or whoever else that DEF sells real can sell on consignment from others. So its not always THEIR bags.

Some people who have also acquired tons of bags, sell their own, obviously, but I would say most are consigned from other sellers.
 
^Agreed. Some of the bags they have are on consignment. I know that there are some resellers who buy from other sellers using their ebay IDs or discreet "buying" IDs so that potential buyers can't see what the seller bought.