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You need to buy 10 to get them this cheap, but 0.68c each is cheaper than a previously posted deal. Otherwise they cost 0.95c shipped using the PICK5 code.
Even more discount if you buy >30 pieces (8% off subsequent items)…
But, the product has some limitations: They use expensive little batteries which are drained quickly if doors get left open. Best for use with cabinets made out of glass so people can see if they remain on.
Also, like all battery powered sensor lights, the batteries need replacement and leak if you don't change them. BUT these limitations can be removed by simply running some 12V wiring direct to each light from a 12V powerpack.
Question is which is better; one or two PIR sensors that turn on the lights in a row of cabinets (if using these or something else like strip-lights), or if using the separate sensors in each light/cabinet (like these), is desirable so each turn on and off separately.
Also, wiring to each light allows you to activate the LEDs whenever the main light circuit is live, and to simply leave them in sensor mode when the main lights are off is the best approach with glass fronted-doors.
Not bad for $6.81 plus a powerpack and some wire.
I wish they made these with AA or AAA battery type…