I have a new, unopened Sena 50s Dual set intercom box for sale. I won these as a prize and I already use a Sena 50s and love it. This box goes for $639 on Revzilla and a single headset goes for $359. You can either buy both in the box for $550 or I would sell just one for $300 (I'd probably keep the other one myself). I like this one because it has the Harman Kardon mesh setup and the volume is loud enough that I hear my music and communication while wearing ear plugs to keep out the road noise. This is also the first place I'm posting, but if no one's interested I'll post other places.