I have found a place that will supply Continental TS830P Winter tyres 255 x 35 x 18 94Y for £150 each. Anyone had these for winter and is the price about right.
I use my Zed every day for a 30 mile round trip for work.
When you buy Conti winter tyres
Make sure you rather choose assymetrical design instead of directional.
I had assimetrical TS810 (or 830) and they were much better in snow conditions then my actual directional TS850
Assymetrical tyres have more lateral grip then directional which allows you to corner with more confidence.
This will probably apply not only to Continental tyres, but all kinds of tires