you can also get it for free through TrialPay, i.e. if or when you are about to buy something online you probably are about to buy anytime anyway. So if you really ever need the same installer again, that's a way to do it.

Even more crafty... clear your Temp folder before installing, then after installing, grab a copy of the whole Temp folder. You'll have all the files you need for re-installation. At least I guess that works, haven't actually tried it.

But really, if that's what will keep you from trying it. oh well