Yugster offers the Wartech US Navy Half Serrated Spring Assisted Rescue Knife for $8.97. Coupon code "FreeYugBuck" cuts it to $7.97. With $3 for shipping, that's $22 off list and the lowest total price we could find. This 8" knife features a seat belt cutter and glass breaker.
Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.