It is a costly machine. It starts at less than $5,000 but you get a a 19-inch display, a Turion 64 CPU, and a single Geforce 7800 GTX - 256 MB and you can get another one for only $621.
There's a machine close to $6,000 using the fastest CPU, ML44, 2GB of memory, a 120GB Seagate drive and two 7800 GTX cards. We would still like to see 7900 GTX cards inside as the 7800 GTX is sort of an old story. Still if you want SLI in a notebook there is one for you in Alberta, Canada.
You can play with the machine and buy it here. µ