As a seller, you do not want to price your items too high, or too low. We suggest comparing your item to a similar product that has already sold to get a ballpark price. Think to yourself, "how much would I buy this item for?"
Another convenient option sellers have is the ability to set up an automatic price drop. When you are inputting a listing, you are given the option to automatically drop the price on a chosen date if your item has not yet sold. You can set a sale price for a specified amount of time for specific product items. For example: You could set a sale price on one item for 3 days. This shows up on the product page and tells buyers how long until the sale is over. After the sale is over, your item automatically goes back up to the original price.