For its members only, Sam's Club offers the Logitech K350 Curved Wireless Keyboard for $19.98. (Non-members pay a $2 surcharge, but you'll need a Sam's Club account to check out.) Opt for in-store pickup to avoid the $5.07 shipping charge. That's $5 under last June's mention and the lowest price we could find by $13. It features up to three years of battery life.

Note: Although it's noted as being available exclusively to members at this price, it appears to be available to everyone.

Update: It's now available for in-store pickup only.