not sure about the price hike, best to contact them for the latest specs and pricing. Probably much cheaper to send them your older unit and upgrade to the latest and save $$
stopped by the CAT room at RMAF 2018 and they had the JL5 and JL7 amps and Renaissance and Legrend Preamps and the prices on the amps was something like $15 K (JL5) and $34K (JL7 mono) and he had the new BPX addition of both Preamps. i did not ask about prices on the Preamps?
anyway, the small JL5 stereo amp ran the Magico S5 MKll with ease and sounded great!