Allen Bradley 30 mm Nema Push Button Switches

Hi
My brother and I have several used milling machines that we are
rebuilding. One is a bridgeport cnc. Where is the best source for
repair parts and new switches. Do all Allen Bradley Distributors
charge the same prices. I have started to bid on the odd lot parts for
these on ebay and even they seem to go for very high prices. We are in
Houston. My email addy is whosurto@...

Jan