Here's a link for purchasing the same low carb cheesecake that is sold by Ruby Tuesday:

Carb Conscious Cheesecake, Atkins Elegant Deserts

I've never purchased it online, but I've had it at Ruby Tuesday and it is very, very good.

BTW, it's just a coincidence that this bakery is named "Atkins" Elegant Deserts. They aren't associated with Atkins Nutritionals.