$69 x 3 is a lot more than $159...
Yeah but $69x2 is $138. What would keep two friends from going in, splitting the purchase of one pair, and then each going back claiming the other one was lost? Are these parts serialized?
Either way, that is a lot for a replacement, but who am I to judge. It would probably be smarter to just save the $69 for next year's model (likely with Bluetooth 5), and use the individual for calls/at your desk.