At the LFS I work at.
We have had Borneo giant redtail gouramis for 40 each. We got them as babies, and now they are about 11". They have been there for a little under a year.
We have some humphead glassfish for 25. They have been there for over a year.
Borneo Marble Catfish. He has been there for a couple years.
We had a mystus wyckii for a couple years before I worked there. It would hide all the time so nobody saw it. After a few years it began to come out and it grew from a few inches to over a foot. And it also swam upside down.
We have a longfin albino oscar that looks like it's brain is pressing through the front of it's head. It's been there since Spring. The only person that was interested in it, saw it after we had to move him to a new tank and he was having a "I hate new tanks" fit, so they changed their mind.
And of course, the random barrage of large pacus and iridescent sharks. We don't sell juvies, but the other stores do and we always end up with the adults. Usually the fish are so beat up when customers bring them in, we aren't really going to be able to sell them.