I remember when clay wasn't a big problem or a big expense. But in the past few years I've gone through clay that won't gas out in a bisque firing ( leaving me with bubbled glaze surfaces), clay of a too fine mesh (it cracks in a pot's crevices), and clay that stinks.
So now I'm now buying three different clays to accommodate what I used to do with one good clay. And still I'm not sure that I will have decreased the amount of loss I've been suffering these past few years of firings.
But the fact that I've gone to the trouble of getting new clay in the shop at least shows that I've got hope.