What's going on with cam bearings?!

Any machine shop can usually same day/next day parts from their local warehouse suppliers.
For example tomorrow I can go down the street and get a set of rod bearings for $20 if I call today.
Thanks for all the replies. The machine shop I use is connected to a Napa Auto parts. I dunno, he told me they tried all of their vendors and each one was on back order. He was able to get everything else but the cam bearings. I was able to order a set from rockauto and should have them here Wednesday.