re: Inexpensive 2 zone amplifier with wifi

OP, you could try Accessories4Less.

I think most of what they sell are factory refurbished pieces. I bought a receiver from them 4 years ago and have had zero issues with it working.

1 piece of advice is to make sure you can independently control each zone. The one I bought was a dual zone but I couldn't independently control the volume levels. Thankfully this was fixed a year or 2 later by a firmware and software update.