Costco is offering a FREE sample of Prilosec OTC for those suffering from frequent heartburn! Just go here and scroll down until you see the "Get A Sample" box! I was able to sign up and I do not have a Costco membership, however, that could change at any time and membership may be required.
In order to qualify, I believe you have to say you suffer from frequent heartburn. I checked the "4 - 6 days a week" box. (The kids are still home on summer vacation so it's not that far off. )
Allow 4 - 6 weeks for your sample to arrive.