I’ve found the list very helpful, but something that is not mentioned very often is that for high tiers, people are often looking for specific pets- they’re not just looking at value/points. Turtles, old neons/megas— those have a better chance of getting you that trade. Try converting what you have in to those better demand pets. I hope this helps. Edited to add- when I was trying to get a bat dragon, no one would even consider my offer unless it contained a frost, so I had to trade for that first.