Walmart offers the First Alert 0.17-Cubic Foot Water / Fire Protector Chest for $18.75. Opt for in-store pickup to avoid the $5.99 shipping fee. That's the lowest price we could find by $10. It is fire resistant up to 1550-degrees fahrenheit for 30 minutes and features a 0.17-cubic foot capacity, and 1-push security key latch & lock system.