Napa wants $211 for a stock replacement. Inlinefuelpumps.com has replacement pumps. The pump is $120 and the other parts run about $35 shipped. You can also upgrade to a high flow pump for future mods. Take a look here for some more info about this pump and company:
Fuel pump ideas? - Page 2 - Powerstroke Nation
The tool need is just a fuel line removal tool available at any parts store.
Keep Strokin'