I think the hatcheries jumped on the ability to charge more because of the proposed ban that is going into effect on the 31st. Prior to that becoming publicized, I found them much cheaper.
I purchased a dozen scovy eggs from someone for 25 dollars, included shipping. The very next day, once they found out about the ban, they raised their prices to 45 dollars. I purchased another dozen from someone else for 40 dollars plus shipping. I haven't checked what they are asking now for them.
i think if the person is willing to pay 50 dollars and you are guaranteeing fertility (not hatch rate), then you should ask 50. Supply/demand. Right now the demand is high, which is great for the people who have what others want. I would have paid fifty, because that's how badly I wanted them, and I felt the urgency to get them before the ban took place.