the short answer is what ever you are willing to pay for one..
but it dosent end there, it goes like this
C + T + TR + DL + MP= THE TOTAL COST
C - CARRIER LETS SAY - $5,000
T - TRUCK, CHEVY 3500 - $40,000
TR - TRAILER --------------- $6,000
MP - MISSING PARTS ------- $5,000
DL - DIVORCE LAWYER ------ $200,000 over your life time
so the normal carrier should run in the area of around $256,000.00
but if you do what i did and get 3 then the price drops down to just under $100,000 ea
but thats not counting the bren gun, boys ATG, and PIAT that you have to have to kit it out properly. LOL
good luck and have fun.
dave