Another option, depending on how handy you are is to do it yourself.
this link will give you some guidance as to what is involved.
If your vehicle already has a 4 way plug it is simply a matter of mounting a 7-way/4-way adapter plug on to the back of your vehicle and plugging the 4-way in to it.
If your vehicle does not have a 4-way plug then it may be a simple matter of purchasing the 4-way vehicle specific wire harness and plugging it into your existing vehicle wire harness.
The brake controller is mounted on your dash.
This is a good controller and a good price. They usually have a $5 shipping special to Canada.
In my vehicle I had to drill a hole through my firewall to run the wires. Your vehicle may have an access hole.
The blue wire on the brake controller will connect with a heavy 10 gauge wire and then be run through the firewall to the rear of the vehicle and inserted in the proper location in the 7-way plug.
The black and white wires will run from the brake controller via large 10 gauge wire, through your firewall, directly to your battery
positive and negative posts, using the appropriate circuit breaker just before battery positive. (20 amps usually for a trailer with two brakes}
The red wire from the brake controller will be "tapped" in to the cold side of your brake switch which should be located just above your brake pedal.
A quick email to Tekonsha, letting them know the year and make of your vehicle, will provide you with the colour of the wire you need to tap. Here is their contact info.
Technical Service Coordinator
Cequent Performance Products, Electrical
101 Spires Parkway
Tekonsha, MI. 49092