Hello: It's bulk pickup time near where I live and found a winner!
If you take the suction hose from a Bissel Carpet cleaner and cut the hand tool off just beyond the hose end, you have a 7 foot long flexible hose that fits snugly onto the little stub on the sander and the other end fits snugly into the "Shop Vac" adaptor.
It's much more flexible than the 2 1/2" Ridgid Shop Vac hose I was using up till that point. It looks like a 1 1/4", but the Shop Vac suction is fine.
The best part - it was within my budget!
Excuse me if I posted this in the wrong place, I'm new here and learning my way around.