The last time I received an email directly from Amazon(bought for myself, but now I'm looking for my wife's vehicle). I assume I got the email because the radio was on my wish list. At the time it was for 30% off of pioneer products, you could also save more by bundling accessories. Pioneer was also running a 100 rebate, that you could use with an authorized dealer(amazon, best buy etc.)
You just have to be patient. I have it back on my wish list, so hopefully something comes along again soon.