Hosts actually set their own prices, so as Siacoin increases, the price for storing data (denominated in Siacoin) decreases. Hosts compete with one another, so

Hosts actually set their own prices, so as Siacoin increases, the price for storing data (denominated in Siacoin) decreases. Hosts compete with one another, so prices are driven down to their absolute lowest. The recent issues have been on exchange wallets, which should be fixed very shortly on Bittrex and Shapeshift, as announced recently on Reddit and Twitter.