Not quite. I try to observe very specific Niches over time, but I am new. Gaolers are a nightmare, but say, primals kind of work in hard price classes. But these all exist in short time windows on the low end. Ice eggs, I've seen at 344 and 380 market value. Which morphed... over a week? Some shifts are too long term for me.
Dragon pricing is a speed question. While a hatchling may be worth over 10k, you'd be forced to keep them significantly longer. Too long? For myself, usually, yes. Some sell "normal" dragons, 0 rare genes, at rates of over 30 k, though. They're branded and from special lairs. So if you're going to focus on that revenue, you'd do much better there, for pre-orders alone.
When pricing yourself, I'd add normal value to the standard priceclass. Normal primal: 20 gems. Not atrocious: 5g/k. Starmaps, or rare genes, have a way higher standard rate. If you're lucky, there's little competition... when not, you have the fodder market. 4 gem hatchling are snatched in 20 seconds flat. 5 can take a day. 6 is over basic value. To avoid fodder price, add 1 gem or even 1-1,5 k. They're greedy enough to aim for 400 gold differences. Gold is an unstable fodder priceclass, though. Prices rise when two flights aim for a "push" in dominance.
For disclaimers... I am not a breeder and want them sold fast. So I aim at the lower end. You could probably follow the guide of 20 gems (+1-5 prettiness). Then add values for each rare gene with primals. Special elements are flights here, but usually just breeds. With normal dragons, basic value + 1-5k per a scale is probably reasonable. I'd try setting up a forum page, though.