Just because it's a "recommended configuration" doesn't mean they have it sitting in a warehouse ready to ship. They DO, however, have systems like that. You just have to look for the "fast track" logo. I recently helped a client order one. Really cheap - $500 and free shipping. We ordered it on a Tuesday afternoon, and it arrived the next day.

I had him order the 537s you see in that link. I helped him set it up and transfer his data, and was very pleasantly surprised by how fast that system is. Windows 7 just flies on it, even after you load it up with software. If you're able to cancel your order, I highly recommend that system. It's more than enough computer for the average user (and for 99% of my clients).