Kmart offers a 90 day supply of certain generic drugs for $15, and have announced that the program is expanding to include 300 more drugs. From their press release:
Now covered by the 90-Day Generics Program are nearly 70 new generic medications, including 17 different formulations of popular generic prescription prenatal vitamins, a larger selection than other generic programs
At $5 a month, Kmart’s program is still more expensive than Walmart’s $4 a month program, but instead of going to Walmart every month, Kmart offers a 90 day supply for $15. Presuming, of course, that you can locate a Kmart.