Amazon offers the Nature Made Vitamin D3 1,000 IU Liquid Softgels 100-Count Bottle for $2.32 with free shipping via the directions below. That's tied with our March mention and the lowest total price we could find by $5. It purports to improve bone and joint health, and to strengthen the immune system. To get this deal:

1. View the Nature Made Vitamin D3 1,000 IU Liquid Softgels 100-Count Bottle for $3.32
2. clip the $1 off coupon on the product page
3. check out via Subscribe & Save for a final price of $2.32

Note: Be sure to cancel your subscription after receiving your item to avoid being billed for subsequent shipments.