u could make that for 50 bucks... look in DIY or serch for "roseman" hes got a great tutorial on how to make a DWC and run it proper or if ur down with the DIY stuff i have a great link for blueprints for an aero set up... DIY it, its cheeper, u made it, u can modafiy it to ur needs, and theres no paper trails... thats my opinion
k wel i dont have rosemans link but if u type his name in the serch engine will find a post from him and he will have it in his signature and here the blue prints... i read a post saying that his part count was off as he said 2 elbows when it was really 4 so compair the list to the prints to insure u got everything... good luck! http://hightimes.com/grow/ht_admin/5645