I was actually just looking into building something along the lines of ACRE (Arma plugin for teamspeak for radios and proximity chat) so this would be very much appreciated.
Depending on features and ease of use I’d probably be willing to spend 20 to 100 USD on it. Full blown ACRE style support (looks to have most of it, simulating radio interference shouldn’t be that big a deal if there’s a way to hook into playback) would push it to the high end, just proximity chat would push it towards the lower end.