Let's face it, breast milk storage bags are expensive - especially if you pump directly into bags to save time. You could easily spend over $1,400 on the Medela Pump and Save bags if you plan to make it to a year (10 bags per day). Here is a hack to use Lansinoh bags instead, which is affordable and durable. It could save over $1,000 over the course of one year. Happy Saving, mamas!