They have an Abbra Professional Series that comes with 1 year of monitoring for only $250. Plus tech support.
The Abbra is just the Powermax+ (also being sold as SecureLinc II).
Essentially this amounts to $50 for 1 year of monitoring, which is a little over $4 a month. Not bad. Of course, if a bunch of stoners are doing the monitoring ... hee hee.