Godaddy is the king of upselling. Once you add something as small as a 99 cents domain, Godaddy makes you go through a series of upsells that include everything...View More in the kitchen sink. They've been getting a lot less obtrusive lately which is good & have a much cleaner design, but no doubt, they are still very penetrating with their upsells & I'm sure it works very well. Here is a screenshot of the checkout that includes many of their upsells. However, my favorite part here was how they actually start you off with a 5 year registration. This is the classic example of starting big & down-selling. It's much easier to start with more than to ask for more.