I thought they were fine for what we got, I suppose they weren't cheap but you pay for what you get I suppose. Could have found cheaper perhaps but not much. Same principal all round regarding materials you buy. We got the yellow granite and the amount of compliments we are getting are unreal.
I am sure they would cut them down for you.They are stone masons etc so I am sure they have that facility, plus they have huge selections so you could ask them, possibly have white sandstone in smaller samples perhaps?