If your a member of Costco, you may want to keep reading...
While I never used it previously, Costco has an Auto buyer Program. You can call a toll free number or fill out the "quote" form on the Costco Warehouse Auto Program web site. I filled out the form on the site and submitted it. (Note I had to use 2005 HCH, as 2006 had no HCH option) About an hour later I got a call from the dealer in my area who said he did not have prices, but would call me back. About 2 hrs later, he called back and said they are taking orders for "06 HCH and selling to the public at MSRP. He then said because this deal was through the Costco Program my price would be ~$250 to $300 UNDER MSRP
He encouraged me to check with other dealer, but said regardless of what other delaers quote, advising the Costco program will beat the price by 1% (~$ 200 assuming sale price of $20,000) ! I know two other dealer that have quoted me MSRP, so I should be at $218.50 under MSRP woerst case.