Transponder for Sale

I have a wireless AMB TranX 260 transponder for sale. It looks like new ( like it has never been used) and the battery is in excellent condition (gives 5 green blinks when charged). I do not have the charger, but they can be purchased at Pegasus for $52 (P/N 5002). These sell for just under $500 new (with charger). I'll take $285.