I bought 6 bulbs, various varieties, from The Lily Garden this spring, and they have all bloomed - even the bonus bulb they sent. However, I stepped on one accidentally and broke the stalk! I was very happy with their bulbs.
A couple years ago, my daughter purchased 3 Conca d'Or bulbs for me from Brecks - they all bloomed that first year, and were fabulous this second year.