I don't know why you can't buy them in store. but I'm glad you can't because the price is better here. It seems like an easy item to keep on a shelf, but the only thing everyone has is "tamper evident" crap. I found that to avoid burglary nonsense I would need to upgrade to a 20A socket, which alongside the fact that each triples the price now gives the illusion that a 15A circuit is a 20A circuit, which probably contradicts it the code. I would buy them again. Actually I will buy more.
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