PETsMART - $1 Fish - Tetras & Silver Dollars
PETsMART has Neon Jumbo, Black Skirt, Red Minor, Long Fin Red Minor, and Silver Dollars on sale for $1 each. All you have to do is sign up for their Savings Card (if you don't already have it) and your good to go. The Silver Dollars were all out in my area....usually $5.29 each and most of the Tetras run $2 - $4 each.
I think this is a pretty good deal because you usually purchase about 5 Tetras or more and the savings become more substantial then.
Hope this helps some aquarium enthusiast out!