Newegg offers the Rosewill 3-in-1 Metal / Voltage / Stud Detector, model no. REGD-6361, for $11.99. This $5 mail-in rebate cuts it to $6.99. With free shipping, that's $3 under our September mention and 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 December 9.