wrote:
I have the ear of some local government development people, who are
contemplating upgrading some airports. Money is tight, so an ILS is
probably not under consideration. So, I want to recommend to them
checking into a WAAS installation. Does anyone know what the prices of
such equipment for an airport are, which companies are selling them,
and how much it costs to get the FAA to then create a WAAS IFR
approach?

There's no ground equipment requirement, all the equipment is airborne. All you
have to do is convince the feds to commission the approach. Talk to your
congressperson. I suppose it's possible you might need to get some obstructions
removed, or something like that, in order to get the approach commissioned.