Kevin H, aka Pepe LePew, or Polish Pony sent me the below information. Sounds like a good deal.
ProBikeKit has Continental Grand Prix 4000S tires for 35.99 each if you buy four
or more. These are some of the best tires I have ran, matter of fact it is the
only tire I buy today. You will not find a better deal that I am aware of on
this tire. I have bought several items from ProBikeKit in the past without any
issues. Plus they are offering free shipping.