Its much the same process with sites like Star City Games, TCGplayer, Card Kingdom, etc., and a lot of the differences come down to the exact seller fees, the buylists each individual site has, and how you need to ship your cards
It's never certain how hot demand will be for these until the big day comes - but we'd venture this collection is going to burn through its stocks very quickly indeed
New cards like 'Aerith Gainsborough' that get's stronger when you gain life but then disperses her +1/+1 counters to her teammates when she dies or with 'Gilgamesh, Master-at-Arms' who let's you draw a bunch of cards and freely play any equipment cards onto the battlefield (too bad the card doesn't also play 'Battle on the Big Bridge' track)
At the same time, she doesnt remove two life points from each opponent, but she deals damage, which triggers the effect of a whole lot of interesting cards
The real value is the enchantment that gives your creatures a +1/+1 counter and untaps them every turn, which can improve myriad strategies