Trickstuff brakes £1000, 11.6 Shock £1000, Dorado or EXT Era £1500, £300 bespoke german handle bar, AXS groupset £1200, £2500 super lightweight wheelset, £4000 at the most for the best frame you want from any other manufacturer including shock you can sell and get money back for. Chuck in another grand for stem, pedals, saddle bla bla bla. Total lets say around £10'000 for the best of the best of the best at the most if not much less shopping around. Only a fool woyld pay 12-15k on a factory complete build, either that or someone who is lazy and cba sourcing the parts themselves.