There are many tips that can help make money on selling sports cards through auction sites, such as researching similar sports card auctions and noting successful card prices. Looking at previous auctions is important, as it helps to provide important information on how to title and market the auction and what the starting price should be.
Looking at previous auctions can also help to determine whether or not there is a significant demand for the cards that are to be sold. If previous auctions for similar cards are selling at lower prices than expected or not selling at all, it is a good sign that there is not much current demand for those cards. If this is the case, it may be better to wait to try to sell them, as the demand could go up in the future.
Another tip for making as much money as possible off the auction is to be upfront and honest about the type of card and the condition it is in. It also helps to include high quality, detailed pictures of the cards, as this allows potential bidders to see exactly what condition the card is in and makes them more likely to place a bid.