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Step Stools, Aluminum Ladder in Stock - Uline
They have a location in LA. Not the cheapest in the world but they have quality stuff.
Same idea but a different brand.
We have three of these for use in our shop and they work great, very safe and stable. They've also made guest appearances in shows over the years.
maybe see if one of your local big box stores have some they use for stocking items and if they will let you borrow a couple.