I'm not sure I follow your price calculations, because you're comparing to the Sonos amp products, which are not only the most expensive zone players, but also don't even include the price of the speakers you would have to attach to them. I think I missed something about your setup and cost comparisons.

I'm comparing costs with Sonos's regular speaker products, like the Play:3/5. Even those are too pricey for me, and I'm hoping that these products finally get released.

What kind of home automation are you running? I don't think I've seen you talk about that here before. I'm a home automation nut!