Here are some things to think about when selecting upgrades for your listing:
Fees vary depending on the upgrade, the selling format that you choose, and which eBay site you list on. See eBay listing fees.
Most listing upgrades are flat fees, so it's good to compare the fee to the value of your item. For example, you might promote your item differently if you list a CD version of the Beatles album Revolver, than if you list the original vinyl record in excellent condition.
You need to qualify for some upgrades.
As with listing fees, optional feature fees are charged at the time of listing and are non-refundable.