The Trainer character alone justifies the gap no other card in the set carries comparable collector demand
As far as the market goes, the big streamers can sell packs for well over retail, and the smaller streamers usually get hammered by low ballers within the marketplace
This is pretty useful when you have creatures with strong attack triggers but lack haste, like Etali, Primal Storm
Once it inevitably does get reprinted, it should fall back down to a dollar or two, assuming it hasn't caught on as a staple in a competitive Modern deck by then, which is unlikely but not impossible
In Spikes case, however, her colored mana symbols and activated ability cost have been appropriately replaced with Phyrexian mana (read: the most broken mana)
Consecrated Sphinx 3.9 Power 3.9 Support 3.9 I hated this card when I first saw it and refused to put one in the cube for ages