I used to work at a couple local Yamaha dealers in the parts department. Most Yamaha parts retail was double dealer cost. Some items this was not the case, but most were. Not sure if this still holds true, as my last year on that side of the counter was in '99. Trick is if you can build a relationship with the dealer, most will give you up to %25 discount. Now that being said, I shop around for the best deal on any parts I buy. Why wouldn't you?