Maps being priced that low seems like an anomaly since there's been a whole mess of "supply" bots on Aether who are scripted to server hop and buy out any maps that are within a certain acceptable price range, then mail them to the parties that are actually doing the farming.
But yeah, I suppose it wouldn't really change much in the long run. They already purchase them at rates of around three every few minutes when they actually need them anyways.