Exclusively for Prime members, Amazon offers this Women's Luxury Beauty Sample Box bundled with a $19.99 Amazon Credit for $19.99 with free shipping. (The credit must be used towards purchases of similar luxury beauty products.) Assuming you'll use the credit, that's tied with our March mention and makes the sample box essentially free. Each box includes 10 or more items, with products such as face and hand cream, sunscreen, perfume, and cleanser. It's limited to one box per customer.

Note: This item usually ships within five to seven days.