If you want infinite amounts of gold (and have patience), try this technique. Buy and equip a Buckler, and head to the Eastings Merchant, who has an incredible array of powerful gear. With the Buckler still equipped, opt to sell it to the merchant. You'll get 7 gold for it, but it'll still be equipped on your character. You can then do this over and over again for infinite gold pieces, but it'll take a while to build a substantial amount up only seven pieces at a time.