You have 3 plans to choose from. First is the prepaid plan, which is paying for all three trimesters upfront. Every three months, you will receive one box with 5-8 full size products tailored for each trimester. Second is the recurring plan, which is an automatic plan for all three trimesters. In this plan you will be charged automatically, unless you cancel, every three months and a box will be delivered. The plan cancels automatically after nine months. Third plan is a one time payment plan, which means you get to choose which trimester you want a box for.