Try FWR if you don't mind not having "the latest" boots.
Just got a AV46AzaroST for a great price. (What I used before Avon brought out Storms) Just the same, apart from the rear 46 looking super sexy.
http://www.fwr.co.uk/indexright.htm
That price is a little salty if its a 160 and fitted. But what price convenience? If you use your bike everyday......Bish bash bosh back-on-the-road.
If not, what about, buy tyre on net, take wheel off bike, chuck both in car, go get fitted?