Newegg offers the Rosewill 3-in-1 Metal / Voltage / Stud Detector, model no. REGD-6361, for $9.99. Coupon code "EMCPGPF95" cuts it to $6.99. With free shipping, that's tied with our December mention (which required a rebate) as the best price we've seen. (It's also a current price low by $8.) This 3-in-1 detector features an LCD and audible indicator. It requires one 9-volt battery, not included. Deal ends March 12.