I forget the price but I believe it was around $10.As for fit and design,they want you to use thier tool so you don't put a rachet and socket on the plug and over tighten it causing even more frustration.I'm not trying to get into an argument here I just think that a person like yourself who has hade so much wrench time on a Honda product would appreciate Honda designing a simple tool to save you a bunch of *****ing when you pull the threads out of the motor because of over tourqing the plug.