I am wanting to build up a stock of these couplings for shafts not over 1" .
I just want to have some on the shelf for
when I want to build something. The problem is that new, they are expensive
for a bunch of them.

I've checked McMaster and Ebay but still, for a number of them, they are
expensive.

Any ideas for cheap other than make them? Hose and clamps may work for very
small stuff.

Thanks

j/b