As it happens I was phoning around for tire prices this morning. Most bike places around here will charge about $40 a tire to install if you do not buy the tire there. It is worthwhile bringing tires up to US Border cities
The best price I found so far was at a place in Clinton, Ont. A bit of a ride for you,
http://www.platinum-powersports.com/indexx.php
Quote was installed on rim Z8- $360. plus tax( these are about $307 at the Motorcycle Superstore, so better than bringing them in and having installed). PR3- $441. plus tax. He said I could pull the wheels at his parking lot or he would do it for an additional$35. Was thinking originally on the PR3's but might see about the reviews on the Z8's as there is such a price difference on the PR3's up here.
Owners name was Donald seemed like a nice guy. Maybe if you are interested he might be willing to discount for 2 pairs if we went in together. Or anyone else wanting to get together for a group order.