I'm getting mine from Lohen, as for a price I'm not too sure what they will eventually sell it for. They quoted me a price (in September) and it wont go above that but they were not sure what it will eventually sell for, maybe a little bit more than what I payed with the new sleeve that the kit needs. But as a ball park figure I would say around £200 to £250.
They ordered mine along with their own for evaluation. I know they have fitted it to their demo car this week and are RR it, so we shall see what they find out. I'm expecting mine hopefully at the end of the week if not beginning of the next.
