Of all of the painlands, Shivan Reef is the only one holding any value. The rest have accepted that they are not good enough for Modern (definitely not for Legacy/Classic) and so have faded to mostly under a ticket, but the Reef is commanding 6.
Where is the demand coming from? I've not seen it being played in Modern except as a fringe 1-of, and I don't see budget players driving enough demand to push it to 6.
Is it played as a 4-of there over (or in addition to) Steam Vents, Scalding Tarn, Cascade Bluffs and the checkland? That would explain it if it is, as Storm is a fairly budget deck IIRC.
Where is the demand coming from? I've not seen it being played in Modern except as a fringe 1-of, and I don't see budget players driving enough demand to push it to 6.
Is it played as a 4-of there over (or in addition to) Steam Vents, Scalding Tarn, Cascade Bluffs and the checkland? That would explain it if it is, as Storm is a fairly budget deck IIRC.
Do you follow coverage at all? You missed geist winning a grand prix.