Has McIntosh Ever Decreased Prices (on new equipment)?

Nope. They don't due sales, open box. refurbished or any of that. If someone returns a unit not fit for purpose, no one will ever see it again. Same for Luxman or any other premium brand. They have an image to protect. 

Mark Levinson will do any of the above. Go figure.

They might have promotions, buy this and get something extra, but the unwritten rule of premium-priced products is that MSRP never goes down. Price cuts do damage to the brand, signal market weakness and devalue used gear, all bad.

You can get a deal through a dealer, I traded some gear in and got a great price on a new Mc pre.  I paid cash though.

McIntosh ran a trade-in/trade-up offer about two years ago.  Quite a few conditions, but it was aimed at people who had older McIntosh gear to trade in like for like.  Pre amp for pre amp, or amp for amp.