Blueberry's membership costs $24 per month or $216 per year ($18/month), plus a one-time fee for your at-home medical kit. There are no per-visit fees or copays regardless of your insurance coverage; no matter how much you use Blueberry or how many children you have, you'll never be charged any additional fees.
There are also no commitments - you can cancel at any time online on your account page.