Give a good reason for your price - Whether your price is higher or lower, explain why. Help the reader justify the purchase. Overcome any objections the buyer may have. You must be able to convince even the most hardened skeptics. Use Time Frames - Whenever it is possible initiate a time frame.
Fear makes a great motivator.
Fear of missing a great deal or fear of what can happen without your product. Make your product so attractive that your reader has no choice but to buy. Ad copy must relate and communicate like average people. Be Personal - Address you reader in the first person. Be Sincere - People can spot phonies and phony copy just as easy.