The Acer Iconia A500 also went on sale on Tuesday at Best Buy and many stores still have this one in stock. BestBuy.com also list this one as available. Sure, it's $50 more than the Transformer but it comes wrapped in a nice metal case and you can get one today.
It would actually be a better tablet for me as the spec's are a little better than the Transformer. As a quick reminder:
- 10.1" WXGA 1280x800 screen.
- Dual core Nvidia Tegra 2, 1GHz
- 16GB Storage
- 1GB RAM
- 2MP front/5MP rear camera
- 8 hour battery life.
That battery life seems a little slim but it wouldn't be a deal breaker for me. This is a Honeycomb tablet with a dual core chip and you can get it today for less than $500. What's not to love about that?