My set has to be 10 years old now.
I see plenty of similar models priced under 20.00 USD. Mine is stereo and has a volume control on the cord with mic on/off switch which can be valuable when in air combat pulling hard manuevers - I tend to grunt a lot (LOL).
I suggest getting a stereo model from whomever. You will want both ears grabbing the stereo. It is a head trip.