I'm seeing that lots of people buy from biketiresdirect.com. I checked the price of my favorite tires (continental grand prix 4 seasons) at biketiresdirect.com - they want $57.60 each + $5.00 shipping for a total of $120.20. That seems like a lot more than the $63.72 total from probikekit.com - like, nearly 90 percent more!