There are a lot of carts with enclosures here running around. The two most popular are the Curtis, I don't have one but from what I've heard, they're about $2200 or about $3,000 installed. Curtis you'll see mostly cream colored or black.
The second most common, but way less than Curtis, is the Sleekline. It's similar but more of a soft sided where Curtis is more hard, Sleekline are mostly black. I don't have a price, but I believe they're about the same as Curtis in price.