https://tools.woot.com/offers/back-to-the-roots-organic-mushroom-grow-kit-3-pack 3-Pack Back to the Roots Organic Mushroom Grow Kit (Oyster, Oyster & Pink) on sale for $13.99. Shipping is free for Amazon Prime Members (must login with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.