Meet the Relay G10: a digital wireless guitar system with a plug & play design. Just plug in your instrument, and you are ready to go. You get a rechargeable battery for up to 8 hours. The transmitter can be recharged when docked on the receiver.
Relay G10 delivers high quality audio. It operates in 2.4GHz ISM band to minimize interference. It can be used with electric and acoustic guitars. Costs under $180 at this time.