I have an AVR tiny chip application to control a motor. Now I'd like to step it up to add WiFi connectivity/remote control (on/off, fwd, rev, speed, etc)...(quantity 2500). I don't need any measurable data capacity (though wifi doen't have a "slow" mode). Is there something in the $5-$10(max) range? I see a lot of modules in the $20 range, but that's too much.
Bluetooth is not a desired connectivity option (though I see the prices are nice and low)
I realize its somewhat ridiculous to expect to get a full-fledge GHz transceiver & high speed data access for this price, but I also remember when GPS was a $1200 option.