Sears offers the Craftsman Stud Finder with SpotLite Pointing System
, model no. 60573, for $17.99
. Plus, Shop Your Way Max members bag free shipping
. (Not a member? It's free to sign up for a 90-day trial
; otherwise, shipping adds $5.75.) That's $2 off and the lowest total price we could find for this model. It features a light to indicate stud center, automatic calibration, and stud and joist detection up to 1.5" deep.