I configured an X3 on the bmw website with a resulting MSRP of $43,750. The dealer invoice for this is $40,255. I offered $1200 over dealer invoice with floor mats thrown in and the salesman said that should work. Later I got a call from the salesman saying that after looking at the numbers and talking with his manager that he had to add an additional $480 to cover the MACO costs (prep, car wash, advertising). Has anyone encountered this? He said this cost is in addition to the dealer invoice.