There’s a special kind of madness that overtakes people when they discover a thrift store that’s actually worth the trip, and SuperThrift in Portland, Oregon, has turned that madness into an art form.

Tucked away in the heart of St. George, Utah, exists a bargain hunter’s paradise where the thrill of the find meets prices that’ll make your wallet do a happy dance. Deseret Industries (or “D.I.” as ...