Groupon offers the Deluxe Sherpa & Suede Medium Orthopedic Pet Bed in Espresso (pictured), Navy, or Clay or $16.99. Shipping adds $3.99, or spend $25 or more to bag free shipping. That's at least $33 off list and the lowest total price we could find. It features a removable cover and a water-resistant poly-canvas base.
Also available is the Deluxe Snuggle Terry & Suede Medium Orthopedic Pet Beds in four colors for $16.99. Shipping adds $3.99, or spend $25 or more to bag free shipping. That's another price low, this time by at least $13. Both deals end April 27.
Note that each bed is also available in sizes large and jumbo, for $24.99 or $34.99 respectively. Plus, these sizes will receive free shipping.