http://shop.easternmarine.com/
Great service from these guys. ~$70 shipped for those tires. No tax.
i have bought tires & rims from them and they are great. if you have any questions they are very helpful and knowledgeable.
A lot easier to click and have them delivered to your door.
Only problem is if you by a loose tire you have to take the old one off, mount the new one, and dispose of the old one, which can be a turn off for some....