I only found out about this from ALI.
Go to
www.savex.cz request quotation for L39 turbine version for retracts, rudder and flaps pick cour scheme from web site
He will e mail back a quote.
Pay money, he gives shipping date.
I have had 2 of these from him, one friend had ordered 3 and another 2. All arrived pretty well on time and with no problems.
I understand this other guy used to work at Savex and has gone off on his own, don't know the reasons but the product is not as good and he seems to be unreliable.