The other day I mentioned how Wal-Mart’s $4 prescription deal was gonna save us about $300 a year. I underestimated.

Turns out Wal-Mart will sell you a 90-day supply of some drugs for $10, an even greater upfront savings plus a two-thirds reduction in the time and cost associated with getting the prescription filled. But there is more.

Yesterday I noticed that Bi-Lo is offering the $4/30-$10/90 pricepoint on 400 drugs. Wonder why? It is almost like they are competing for your business.