I'm vacuuming the house as I type.

[davester]

This one was $245 for the 550 model. The suggested retail is much higher...you need to hunt around. This particular model is generally listed as the "500 series" on amazon but in the specs it shows that it is the 550, which is a good model to have since it has built in scheduling and two "lighthouses" which are virtual walls that you can use to block off rooms with.