Model Ls have been trading hands less than 2K. Not many TLs around to compare, I gave $1500 for my TL but it was in very poor shape when I got it. I wouldnt know where to price the Bamford? Z4s are not easy to find like the much more common Z2 it would take a large pile of greens to get the Z4 away from me,, but that doesn't mean it is worth that much, LOL There are practically zero Bamford parts. I have the head gaskets reproduced and keep them in stock, valves are made from blanks. Rod bearings are either poured or adapted from John Deere bearings depending on model. Used pistons are ground back to round, ring grooves recut and we sleeve the engine to fit the piston. I bought the last stock of injector tips that Bosch had here in the states. Fuel pump parts are ;arge;lythe same as a CS Lister.