One of the most popular offers I give to my customers who purchase anything from my site is a discount. I offer a percentage off the purchase price for any purchase over a certain amount. This can be a great way to get more customers to purchase from your site.
Finally, I offer free gifts or services with purchases. These can be anything from a free ebook or report to a free gift card or other discounts. This is a great way to show customers that I appreciate their loyalty and am willing to give something back.