It's a little pricey for the hobbyist but for "normies" it looks really good. Neat product idea.
replyWhat would you consider more appropriate hobbyist kit?
reply$140 for a solution that works with existing receivers compares pretty nicely with, say, Bluetooth speakers (starting at about $50 and running well north, per set).
I've a number of FM-capable tuners lying around, and could pick up more quite cheaply. The transmitter's the key kit.