purchased 2 about 3 months ago, I think.  One of them has developed a small flake off, about 1/2 size of pencil eraser about 1 inch up on inside.   Tried cooking 1 egg with no butter. Wasn't too swift , crusty bottom on egg.
If you add a little butter they are great.  I didn't try to get a replacement, figured it would be a waste of my time...