Bed Bug Monitor for the house

Just got a bid of $3000 - propane treatment includes K-9 and 2 followups.
Warranty - 30 days after the inital treatment
Targeted treatement - after the follow-up if needed
The technician also mentioned NIGHTWATCH BED BUG MONITOR
Here is how this monitor works
Plugs into a wall
$500/piece -
Time will tell how good it is

Here are some other bed bug monitoring units
NightWatch by BioSensory, Inc. is the just one of an effective new type of bed bug monitoring devices on the market. Extensively tested and vetted by Purdue University entomologists, it uses heat, CO2 and a pheromone lure to attract, trap and kill bed bugs. It has a small footprint and has a clock timer with an automatic “on” setting and a CO2 cartridge that lasts several days.
• CDC 3000 by Cimex Science is a discrete, portable monitoring and trapping device housed in a briefcase. Mimicking a human body, it lures bugs within a six-foot radius, annihilating them with CO2, making it safe around children and pets. This monitor has a CO2 cartridge that lasts about eight hours.
• Bug Dome by Silvandersson will soon be available from the Swedish company that developed eco-friendly bed bug eliminator Cryonite. Using an attractant to lure bed bugs into replaceable glue traps, it plugs into any wall outlet.
• BB Alert Active by MIDMOS, available in Europe, should reach U.S. markets soon. The small monitor uses replaceable packets of chemical attractant to entice bugs into a glue trap.

A bed bug monitor might be something to consider.
But looks like now of the 850 subscribers to the yahoo group have tried that, as I have no feedback from any.
These monitors are expensive, but no return policy - as they don't want to infest their warehouse. But then if they this monitor working the way it is intended, then they should not fear an infestation?