For future reference, yes you can get them locally.
Graingers, Winnelson, Johnstone supply, and Sodeco should all stock various electric and mechanical float switches/valves. I got mine at Graingers and when I called (like 2 years ago) they had 20 in stock for about $15 each.
Graingers, Winnelson, Johnstone supply, and Sodeco should all stock various electric and mechanical float switches/valves. I got mine at Graingers and when I called (like 2 years ago) they had 20 in stock for about $15 each.