Thanks for the reassurance, I need it :P
On another note, are these are called tablets? I thought a tablet only meant a laptop with a touch screen.
Tablets are sometimes laptops, but it typically refers to other products that Wacom (and other companies) sell that function as dedicated digital input devices for PCs.
They vary in price from $100 (the Bamboo I believe) to $2000+. More expensive versions feature larger interactive services, higher pressure sensitivity, and some of the most expensive models have built in screens (so you can see what you are drawing as you go).