Hi Sam, This package comes with 30 transponders but I am willing to negotiate a deal. I will also be advertising this elswhere.
Regarding the software we use the Laps Free software which is excellent and can be used to hold very large meetings & is a FREE download. If you need any help setting this up contact me. We use this software with windows 7 and a USB to serial adaptor cable. Windows picks up the driver for this cable automatically. We have no problems with this set up. Thanks Nori