When I stumbled onto a ad for this product I was thrilled.  We were about to move and I was leaving behind extra tall toilets at the old place.  This filled the gap nicely.  As a tall,. big person, standard "builders toilets" are really poor and this helps fill the gap.  The maintenance staff at the retirement community we moved to was  thrilled to learn about the product which they says can be helpful in their Assisted Living units.

Even though 3 inches high, this seat is as well made as any other toilet seat I have ever owned.   Every toilet seat I've ever owned could use a better hinge design.  
Sadly, it is almost as if it is planned obsolescence.