Alot of times it ends up killing off buyersSay something is 100 + Shipping, so you go to the UPS price quote and shipping will be 25 dollers, well instead of charging the buyer 125 you have to now charge him 140+ because you have to factor in the 15+ dollers of packaging materials your going to buy out of pocket to ship the item with, alot of people dont like overly high shipped quotes and that kills off buyers even though its in there best interest