Theres a big difference between a single speculator clearing out the last seller on Amazon, and a card that has zero copies posted for sale anywhere after a major spike
Great Divide Guide Great Divide Guide doesnt straight-up replace Harabaz Druid, but its going into every ally deck youll ever build, and its generically playable outside allies
Builders Talent then provides small, steady buffs whenever your Creatures enter, and with a hefty investment of 4W, returns a specific card from your grave directly to the field
The serialized elf, dwarf, and human Solar Rings are only found in some Lord of the Rings: Middle-earth Chronicles collector boosters
Also, that art by notable Magic artist John Avon is brilliant
And that is where basic market dynamics kick in: if on top of that the supply is low because it is a scarce card, if nobody wants to sell it, or if it had a single print run many years ago, then the price can skyrocket