While driving around, I saw a place, Stone Masters, that had a "clearance" sale on granite counter tops. It would be a major piece of work to replace all our counter tops, but we could start by just putting a piece down on the kitchen island. That's a fairly small simple rectangle.
So Linda and I picked out a black and white piece of granite, and had them cut it to 27.5 x 33 inches. $308.23 which gave us both the piece for the kitchen and the "left-over" piece.
I used some "liquid nails" to glue it down to the existing formica counter top, since the purpose of this was mainly just to experiment with having granite counter tops. If it works well, we'll probably want to redo all the counter tops in granite.