Did you know that you can take a off post prescription to a on post pharmacy and they will fill it. It has saved us a ton of money. Sometimes I will just take it to Wal-greens because it is faster but if it is something I do not need instantly then I give it to my hubby to take on post. Consider being on two medicines and picking them up each month. That would be $18 a month. So by going to post I save myself $216.