As they market primarily to people working in construction / other trades - and are therefore sold at the likes of electrical and safety supply stores - we buy them in bulk for when we’re spending weeks installing racks of servers in our datacentre at work.
Can also recomment “Sqwincher” (stupid name aside) products.
https://www.sqwincher.com/products/single-serve-qwik-stik-zero/
As they market primarily to people working in construction / other trades - and are therefore sold at the likes of electrical and safety supply stores - we buy them in bulk for when we’re spending weeks installing racks of servers in our datacentre at work.