Walmart offers the Wilton 6-Cavity Silicone Heart Mold Pan for $5.41. (Amazon has it for the same price as an add-on item.) Choose in-store pickup to dodge the $5.99 shipping fee. That's the lowest price we could find by $8. It's dishwasher-safe and can be used in the freezer, microwave, and oven up to 500°.