Has anyone use Letrozole during your <a href="https://glowing.com/glow-fertility-program">IVF</a> cycle? I am comparing prices and Cosco seems to be so much lower than other pharmacies. Costco is $12 for 20 pills whereas Walgreens is $240 gor 20 pills, and Walmart is $150 for 20 pills. Quite a difference in prices LOL. Where did you purchase your letrozole? Thank you for any information.