cost of monitoring

The "base" cost for monitoring is 14.99, which works out to  .50 a day.  So .15 is obviously incorrect, or more likely, is the cost for the CAMERA monthly fee of $5.

$24.99 is the cost for the "interactive" plan (which includes up to 10 free camera fees), which gives you much more control over your system.  $26.49 is the interactive plan plus tax, because your state whined to SS that you were cheating them out of their sales tax and the Supreme Court judged that states can collect sales taxes from companies which are not in that state.

So no, you are not paying "too much" for any of your homes.  You may be paying more than you want, but your only option is to reduce your service.

Those are accurate rates for monitoring. The question I have is, are all of the homes in the same state? Because you should not be paying tax on one plan but not the others if so.

As Seven stated, Standard Monitoring is $14.99 w/o tax. So, if you do not need Interactive Monitoring (which is $24.99 w/o tax), you can reduce the other homes to that, Standard Plan.

Edit: The Website homepage states: 50 cents a day - which is correct for Standard Monitoring. I am uncertain where you saw 15 cents a day, Ramchandani1975.

FWIW, there is tax on both of my monitoring plans (in the same state).

^ I was thinking the same thing, one home must be in a different state, where taxes are applied.