Where can you find these stools??
They're from Ikea - they're about $60 each, plus the time you'll invest in cutting them down properly, but very nice stools.
Alternately, they have some new stools that're proper candy cab height at 16 3/4" that I believe are called "blanko" - they're like $10 for a pair of 'em, and if you put some kind of cushion on them, I can't imagine they're too bad. In fact, I'm getting some today I believe.