This is the cheapest I've seen it around. Free shipping as well if you use paypal or google checkout.

http://www.autotoys.com/x/product.php?productid=10835

I didn't see anything about them being an authorized Pioneer online dealer but their Terms and Conditions states:

"Absolutely no refunds or exchanges will be given after 30 days from purchase date. Manufacturer warranty will apply if any."

thanks, good find