99Cell via eBay offers the refurbished JBL Link 10 Smart Waterproof Wireless Bluetooth Speaker for $49.99 with free shipping. That's $23 under the lowest price we could find for a new unit, although some stores charge $150. It features a microphone with Google Assistant.
Note: No warranty info is provided.
You might not recognize the name of the top-rated appliance maker in America — but you should.