Originally Posted by Swipe79
If I were you I would check to see if your cards are already on the site and how much they are priced for. Some of the Bowman Draft stuff is very low - just make sure you can make something on them when you send in. Same goes for anything else - supply and demand.
This is true to a point, don't always feel like you need to be the lowest on the site though. If you think a card has more value than you are free to ask your own price. If a player has an amazing feat their cards skyrocket on COMC in a matter of minutes.