As a software developer, I have always despised patents on business models. They are a ridiculous waste of time, and hamper innovation. A method of buying something online is no more patentable than a new method of tying your shoes, and yet over 1300 of such patents have been issued. Well, fortunately that is no more.
Of course, those with now-useless pieces of paper will not go quietly into that good night, but I expect that this case will be upheld on appeal. Now other software developers can also use such innovations as the 1-click purchase, and naming your own price.
TechDirt has an excellent rundown on the whole issue.