Meritline offers the Personal Security Alarm
with free shipping
. That's the lowest total price we could find for such a 130db personal alarm by $3, outside the mentions below. This alarm is triggered by pulling a metal pin and features a volume of 130dB. It requires a 9V battery (not included). Deal ends May 25.
Expect this item to take two to three weeks to ship.
A close price: neewer via eBay
and ukpartsdeal via eBay
offers it for $5.37 with free shipping.