I got a couple for $15 each a few years back with an order of dats I bought from a now gone fish supplier. They came out of New York, New York.
I miss them. One had a physical defect that didn't show up until it was larger that it died from (it was a CB fish). My other one appeared to be healthy as a horse but died suddenly this last winter. Pretty fish.
Senegals are easily bred commercially so they shouldn't be too expenisve to get.