It’s likely that we’ll hit a bottom for pricing for AVS enabled devices that work for far field — maybe $20 in two years. However, this might not stop Amazon from coming out with a third (or higher) generation of Echo Dots that could drive the price down to a level where they give it away with Prime Membership.
Hopefully, new AVS integrations will be hitting the market in the fall that go beyond the Dot / speaker form factor. I’m itching for a Pebble Core type device!
Small note: while I didn’t check if a $30 Dot was available in April, we can see a few for sale for $30 on eBay: