While I agree with what you say here, selling 7 geckos at about $3000 each balances out to more than most breeders make in a season from what I've seen.
For the most part, people are selling their Leo's for a price that means people will take care of them and not take them for granted, not just sell them to make money.
I'd love to eventually end up with a collection that I can use to turn a profit, but at the moment, I'm more interested in giving my pets a wonderful home so they'll stick around as long as possible.
True that $3,000 each is good money, but this is their living I doubt they would want to ruin it and find new jobs.