Arc Ultra for Black Friday

Hi all - new to the Sonos ecosphere and looking to start a system. I've seen that existing owners get discounts that allow them to upgrade, which I don't have the luxury of. Wondering whether anyone has seen the Arc Ultra in ads anywhere? I saw PC Richards put a lot of Sonos stuff on sale, but not that. Hoping I can find a discount somewhere next week to get started, and later add a sub and surrounds.

Also wondering when you start getting discount codes? Is there any benefit to building a system slowly and using codes or does it take a long while before they become available to you? Do you have to trade in your old item?

Thanks for the assist!