It has two tiers of membership: ExtraCare, which is free, and ExtraCare Plus, which costs $5 per month, or $48 annually. The benefits of a free ExtraCare membership include taking advantage of sale prices, receiving custom deals designed just for you, and getting 2% back in CVS ExtraBucks Rewards. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.