I'm also interested in the Warwick Alien Fretless 5, but I can't seem to find any stores that carry it. Maybe it's something you have to order from Warwick directly. No idea of the price, but I'm pretty sure it will be more than $1,000.
Edit: It's definitely more than $1000. An eBay seller currently has a 4-string version listed at a Buy-It-Now price of $2099.99. Wow... Pricey!
I got this model new and delivered from Simba's ebay store. It was like $225.00. I had the Dean AEB 5 Playmate. This bass is literally 10 times better in sound and playability than the Dean.