Thumb Score: +22

Woot! (link for reference only) has 4-Pack Energizer CR2032 Lithium Coin Cell Batteries on sale for $3.49 – 20% Off (discount at checkout) when you checkout via the Woot! App (Details) = $2.79. Shipping is free for Amazon Prime Members (must log in with your Amazon account and select a shipping address in order for Woot to apply free shipping) or is otherwise $6 per order.