I went to Sterling BMW in Newport Beach (where I bought my 96 Z3) and asked how much for Bosch plugs. Answer $30. I asked if that was for four and he answered no, each plug and we have them in stock. I answered that he will have them in stock for a long time at that price since I can get them for $5.95 each at a local parts store ( which I did). I thought Jessie James wore a gun??