Hi Matt,
How do you search for a particular size on that site and then find a price on that site? It's painful to use.
I like
Tirerack.com in the US. Good prices and good to deal with. There's also plenty of customer review on the tirerack site for all the brands.
I got 4 brand new Sumitomos from Tirerack shipped to my door for AU$666. that was the HTR-Z in 315/35/17 for the rear and 235/45/17 for the front. Tyres arrived in a week shipped via FedEx.
We are getting stiched up by the Aussie tyre outlets. The best price I could find for the 315/35/17 Sumitomos in Australia was about $350-$400 each. The demand in Australia for the sizes we use just isn't there so we have to pay a premium price.
Cheers