For example, let's say you are playing an Abzan deck
This doesn't even take the foil version into account, as it costs well over $400, and can get around $500
The Battle for Zendikar lands are more or less worthless, selling for somewhere between $0.25 and $0.50, but I expect that you'll have a hard time getting much more than $0.10 on buylist once Double Masters floods the market with supply (although they might have some value as trade throw-ins)
Timeless is MTG Arenas largest Constructed format where every card is legal
Burning Wish Market Price: $5 Undoubtedly the most impactful cycle to come out of JUD, the "wishes" had a profound effect on competitive formats
For instance, if Eerie Ultimatum is your sorcery of choice, then you just need a graveyard deck (maybe a sacrifice-based one?) and a full graveyard to take advantage of it