If the sales have to continue and the breeders haven't got sufficient adults to sell, the juvies are sold. The sad thing is that the price won't go down despite of the smaller sizes. I've seen it at wholesalers that whatever the size, the price is the same unless we're dealing with XL sizes.
But to the average household with a fishtank at home, smaller versions of fish are sold better. But nowadays, overhere all relavant retailers need a certificate that will show their skills within this field. But it also says that they need to inform the customer that a depending on the species, what size it will become at some point. And that's a good thing. For before they didn't give such information in order to sell more fish.
But I do know that there are a large group of retailers that still refuse to give such info despite of the fact that they are obligated to do so.