Good luck, but I doubt you'll get more than $40 total for all those fish.
Sure, they are worth more and would sell for more in a fish shop. But the thing people seem to forget is that they don't have a fish shop. They don't have customers coming in constantly all day every day. They don't see that while that fish may be up for sale at $70, it may have taken weeks with many people looking at it before it actually sells.
Now you could maybe get out there and hustle and work your but off on internet forums and other marketplaces and get more. But it won't be easy and it most likely wouldn't be worth the time. It's not easy getting eyeballs on your stuff.
And then there are some fish stores who simply won't buy them at all, or even give store credit. Many seem to, but they aren't going to pay more than what they can get from their supplier to start with, and they'll probably want to pay less than that because they could just order it from the supplier.
I've had to just give my fish away multiple times when moving. The only time I really sold my fish was about 10 years ago and I sold me entire setup, tank, equipment, everything to someone. Even then, it was pretty cheap overall, as I just wanted someone to take them before I moved.