With all Dr Purves products you have the ability to self cancel any subscription at any time. On the check out page you will see that it is explicitly stated that all subscriptions continue until cancelled.
If you are unhappy with a product or you feel that it is not appropriate for you then Dr Purves offers a refund of your last payment, which typically will be a 30 day refund. If you feel that a refund is appropriate then please simply send an email to [email protected] and this will be actioned with no questions asked.
Learn how your brain tricks you into thinking and doing all sorts of crazy stuff. You won't believe it.