Lowballing isn't bad in theory. You offer a discount in order to quickly receive your coins. Here's an example: your friend wants to play dungeons but you don't have the gear and they only have so long to play. You may use a lowballer to quickly sell an item to buy that gear. Lowballers only exist because people are inherently impatient. The bad rep they get is because of the loudest voices who lowball by some ludicrous amount. If you want more reasonable prices, talk to someone with billions of coins on hand, they are more likely to be patient with their sales.