DoctorsDeals via eBay offers the PharMeDoc Therapeutic Full-Body Pregnancy Pillow for $47.95. Apply coupon code "PSHOPEARLY" and check out with PayPal to cut it to $38.36. With free shipping, that's the lowest price we could find by $7 and the best deal we've seen. It's designed to conform to both sides of the body to create support and maternity relief in multiple sleeping positions. Deal ends November 20.

Note: This coupon can be used twice per PayPal account.

Update: The price has dropped to $42.95 before coupon, $34.36 after.