It even includes some cards considered to be the worst ever printed, like Wood Elemental
The Cheese Stands Alone is just Barren Glory before Barren Glory existed, though it's interesting to see a silver-border effect ported directly over into a tournament-legal card
Like most Pokmon cards, the value of Baltoy depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Great Encounters)
An Unsummon plus a card draw is not worth UU as my costing analysis suggests but more like the 2U of Repulse
Many are basic cards like pre-evolved Pokmon or items
Scroll Rack will do awesome work here, putting any high-cost creatures you may have drawn and put them back on the library for Durnan to trigger into