There are other sources for the foam parts which are much more affordable. I have the Rauch 727 semi ket (fiberglass parts and plans), and I had the foam parts cut for me by one of Rauch's "suppliers_ (Koster, I believe). They are fantastic and cost me around $300 shipped (less than half the price quoted to me by TDL). The landing gear was purchased from HAWE, another germany manufacturer and they are superb. All together the parts cost around $1300 USD, and I am still left with purchasing the wood. These aircraft are large and he does leave somethings for your own ingenuity, so I would suggest having some building experience before tackling them. I have several videos from the European pilots of these big jets and they are really fantastic and look great in the air. Would love to see someone kit one of these things in a big fiberglass fuselage, it would make it much easier to build.
Good luck
Tommy