Buying
Merchants charge a lot of money for their items. You could even say they are overpriced. You might find better deals if you buy from other players. But if you really want something and the merchant is the only one that sells it, buy it!

Pages
Sometimes merchants have more items than are currently shown. Use the arrow buttons at the bottom to browse additional pages of items.

Selling
The merchants will pay a very low price for items. Whenever possible, sell your items to other players instead for more money. But you'll have to figure out which items you can sell to players and which items you'll have to sell to merchants.