PoleVaultPower.com

I Found an international site that offers pole vault spikes pretty cheap:

Nike Zoom PV II: about 90 USD (including shipping)
http://www.startfitness.co.uk/product.asp?strParents=4070,4071&CAT_ID=4080&P_ID=42992
or
http://www.startfitness.co.uk/product.asp?strParents=4070,4071&CAT_ID=4080&P_ID=36520


Nike Pole Vault Lite: about 75 USD (including shipping)
http://www.startfitness.co.uk/product.asp?strParents=4070,4071&CAT_ID=4080&P_ID=36476

Nike Pole Vault 2: About 62 USD (including shipping)
http://www.startfitness.co.uk/product.asp?strParents=4070,4071&CAT_ID=4080&P_ID=36519


Note: The sizes are in UK sizes. So make sure you order the right US size.

Nice site, but their price on the new PVII is about $97 US, shipping is around $27, and they don't seem to have small US sizes (size 6 US).