That link to Sionsith’s assessment is great! It doesn’t include booster cards though, I daren’t try anything other than 8 cards in case I don’t get as good a deal or can’t trade multiples of lower value cards, but at the moment I have so many 8 cards its not a concern (but I’m getting rid of them at a rate due to the good DB return)
In the standard trade harbour I always trade coins for 2 x 8 booster cards so I can keep up my levels now the daily missions have excluded the raptor training
my most treasured resources are points, DNA, DB in that order. Now Ive unlocked Gorgosuchus and Dakoderma, DNA is more important to me than it was before, as I cant get enough amphibians and cave creatures.