I got mine at a SonyStyle store. When I was looking for a place to buy one, I searched TX5 and Best Buy and I found a blurb on Best Buys forum stating they had no intentions of selling the TX5.
I am not sure why this is, just letting you know. SonyStyle actually worked out well, I got a $75 gift card with my purchase, which I was allowed to apply to a service plan. I ended up choosing a 2 year for $70. I usually would opt out, but this camera is going to be in the water quite often, and the regular warranty only covers defects. With the service plan, I forget to close the battery door and the camera dies in the water, I get a new one.
Now I just neew a floating wrist strap, a waterproof camera does me no good if I drop it and it falls to the bottom of the lake...