i dont think ive ever seen ballasts this cheep. the question of whether or not the quality is commensurate with the price i cannot say.
http://www.plantlightinghydroponics.com/sunlight-ss10-remote-ballast-c-357_838.html
http://www.plantlightinghydroponics.com/sunlight-ss10-remote-ballast-c-357_838.html