Select the plan that works best for you. You can cancel at any time, and we have a 100% money back guarantee. If you're not happy or the subscription isn't useful for you, we will refund you with no questions asked. The kit will be sent around the 4th of each month. You'll be billed on the 11th of each month. You can choose to skip kits during the summer - just email us to let us know! All plans come with free shipping in the US!