Spam them, and they'll never visit your auctions again. Know Your Audience Continue correspondence with people who you have had successful, rewarding transactions with, and try to learn their specific interests within a given category. Make note of this information, and keep it on file so that you can have it at your fingertips when you are shopping online or at physical auctions. If you know what your customers like, then you can use this information when making your purchases. Buyers will not only be glad you are selling items tailored to their interests, but they also just might recognize that you are going that extra mile to find items they want.
Timing Be smart and sell rare items when they are hot.
If other sellers are clogging the market, sit back and pick your spots. Also, whenever possible, don't put a reserve price on your items. If an item is special, it will sell above market value. Don't dissuade bidders with a reserve. Both techniques will give you a positive reputation as a seller who respects the auction process and enjoys the thrill of competitive bidding.