Looks like Skyvision Xtreme has packaged up a NavWorx ADS600-B ADS-B transceiver to produce a portable box (briefcase really) with not only ADS-B In, but Out as well for $3295 (price is mentioned by company principal Harry Sanders in an AVweb podcast.) The Out (transmitter) is needed to increase the utility of the traffic alerting aspect. Acts as a Wifi access point, allowing it to be used with tablets like the iPad. Pricey, but less than the $10k I once read was the likely price for such a thing. Would be nice to see the transceiver prices fall under $1500 someday....