How much would you pay for a modern tech 15" 60 series performance streetable tire?

On 2 of my cars I run continental extreme contact DWS tires. They are unreal in the rain and on dry roads they handle great in the corners. The one car is a 91' Volvo 240 with 225/50/16's on 8.5" corvette wheels. They other is an Audi A4 on 18" BBS wheels. I forget what size tires is on the Audi.

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