most likely too many returns
I would imagine that if you were buying in bulk (2+ bags at a time) you may be blacklisted. LV frowns upon resellers, especially for limited or discontinued items.
Do you mean buying multiples of the same item? What if you were able to buy a lot of bags and SLGs at once, all different and just for yourself? It would be totally unfair to get blacklisted like that!
Disreputable is the "key" word here, disreputable actions bring consequences.Too many returns or returning a used bag or buying in multiples. They don't do this unless someone has done something pretty disreputable.