해석좀 해주세요 이해 잘되게 Selecting "Checkout & Deliver" will send you a trade offer to deliver your item(s) to your Steam inventory, and no refund will be available. Selecting "Checkout & Store" will store your purchases in your OPSkins inventory, where you can re-list them or withdraw them at a later time. This will allow you to refund the item(s) for a limited time. Note that if you refund an item and purchase it again at a later date, you will not be able to refund it again.