A hippogriff is the same CR and their eggs are 200. Hippogriffs are also a lot more usefull though, and I'm guessing shocker lizards would lay more eggs each time and have a faster breeding cycle. Off the top of my head, I would say 25-50 gp.
Lmao side quest would be fun. But they are in the middle of warzone and going to have camp runners go back to town for them and sell stuff and buy supplies. I think I will give them 35 since it says the lizards are hard to train. thanks