See hobbyking have finally got round to selling a turbine but not their own, they have just listed the swiwin 60N size at $1590 there are others in the range be interesting to see if they stock them as well.
One good thing is we might see some realistically priced jet kits to suit in the future.
https://hobbyking.com/en_us/swiwin-s...-13-48lbs.html