Demand for those particular coils is low enough that most dealers aren't going to have them in stock. It's possible to buy factory direct, but the factory doesn't compete with dealers, so factory direct you pay full list price.
If you can't find what you're looking for privately, I would suggest asking a dealer to order one for you, and apply their usual discount to the sale. That not only gets you the searchcoil at less than list price, it also helps you establish a relationship with a dealer.
If you have a good local dealer, that's the best way to go. If you don't, then I would suggest start with forum sponsors. Dealers who sponsor forums almost universally have good reputations because they'd get slaughtered on the same forums if they didn't do a good job for their customers.
--Dave J.
