I bought it for $19.99 at Costco-Summerlin. Works well but quality control (as I've found with many products made in China) is inconsistent. Mounting clips for the retaining springs should bend a little, which it did on one, but were brittle on the other and broke. On the same unit with the mounting clips that broke off, wiring in the screw-in power coupler was loose and worked intermittently. Rather than risk a short, I discarded the defective unit.
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