Exclusively for Prime members, Amazon offers a Nutrition & Wellness Sample Box bundled with a $6.99 Amazon Credit for $6.99 with free shipping. (The credit must be used toward purchases of similar nutrition and wellness products.) Assuming you'll use the credit, that's tied with our mention from three weeks ago and essentially makes the box free. It includes eight or more samples. It's limited to one box per customer.

Note: It is estimated to ship in five to seven days.