The cheapest I've seen them in the Chicago area is $5.00 each, with an average price of $7.00 each.
The BEST source of Cherry shrimp is msjinkzd here at AC. I ordered from her several times and she has very healthy stock. Other members here also sell there overstock at reasonable prices.
My LFS is owned by the president of the local aquarium club, and of course she orders things from suppliers, but she relies alot on the fish club members bringing her things like plants and any fish that are prolific breeders. I often bring her plants and MTS snails for store credit, and I'm sure other people bring her RCS and other shrimp, so her prices are very reasonable, about $2 each I think.
Hm, so I guess my local prices aren't too outrageous. I think I'll wait for spring and order a batch of 20 or so online. Even if I lose half, I'd still probably be ahead over buying at the LFS.