Today only, Fry's Electronics offers the Swann Doorstop Alarm, model no. SWHOM-DOORST, for $6.28. This $6 mail-in rebate cuts it to 28 cents. With free shipping, that's the lowest total price we could find by $7 and the best we've seen since Black Friday, when it was $0 after rebate. It features a 110 dB siren. Rebate expires May 23.

BUY NOW: 28 cents after rebate + Free Shipping at Fry's