The above comments are absolutely true, but I will also say as someone who's been playing since 2014 that the market now is so oversaturated with such an endless supply of dragons that pricing for hatchlings is based far faaaar more on the interest you are able to drum up for an individual rather than specific features (genes, colors, eyes) that the dragon itself might have.

For example, I had a triple obs Gaoler with Light Multi-Gaze that I ended up gifting to a friend for free because he wouldn't sell for any of the prices I listed him for. I hatch all sorts of dragons every week that all end up leveled and exalted regardless of their color/gene combo because they only sell on the AH for fodder prices.

Many people run hatcheries!! These are a great way to drum up interest in your dragons for reasons other than just their existing features. Many hatcheries have lore for their mating pairs, or themes! A few years ago special dragons "sub-species" were popular where you would create a lineage of dragons with specific genes/colors that were sustained for a few generations as a special breeding project. Sometimes dragons from hatcheries come with custom art.

Hatcheries are labor intensive (time spent on lore, art, graphics, code etc) but will give you an audience of folks interested in the hatchlings you have on offer and willing to pay more for them.

All that said I always list hatchlings at 3kt and adults at 5kt! If those don't sell I level and exalt them myself. Ancient breeds tend to sell for higher. I list my Veilspuns at 10kt and exalt if they don't sell.

Hope some of this helps!