The Best way to have an easy transaction...Is to Pay for your item at the end of any auction.
Sellers always appreciate prompt payment, especially the Non-Business Sellers who are only selling to clear out unwanted items. By Paying promptly, you, the Buyer will help to make life that little bit easier and the seller can reciprocate in kind by posting your item out to you that much faster.
Always communicate with your seller, especially if you know there's going to be a delay in paying for your items. This way the seller will know when to expect payment and can have your item ready for posting when it has been paid, this helps the seller in many ways. Communication is a vital part of the eBAY selling process. Always leave feedback for seller, so that they know that you're happy with the service that they have provided and tha you're pleased with your item. Remember if there's a problem with your transaction, communicate this to your seller, and see if you can work it out between yourselves to a mutual agreement where both parties are satisfied.