For Prime members only, Amazon offers the BabyGanics 20-oz. Chamomile Verbena Bubble Bath 2-Pack for $6.81 with free shipping via the steps below. That's the lowest total price we could find by $7. It's free of parabens, sulfates, phthalates, mineral oil, petrolatum, artificial fragrances, and dyes. To get this deal:

1. View the BabyGanics 20-oz. Chamomile Verbena Bubble Bath 2-Pack for $11.36
2. clip the 35% off coupon on the product page
3. order via Subscribe & Save for a final price of $6.81

Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.