I have not. One of the jobs I had during college was running traveling tool shows, where we'd rent out a meeting room in a hotel and sell the shit out of tools to local businesses, farmers, etc. - a warehouse on wheels concept. I ran one of those in the Amana colonies back then, and it was the only place I didn't get a back check from (standard practice - visit the local banks before departing and make sure the checks would clear - if not, back to get to the tools or cash from the buyer's, whose addresses were on the checks). My sense is the business is run by the same kind of people, and your online transaction would be a safe purchase.
But I got introduced to their product at a local restaurant during my trip to Newton, IA back then and have been singing it's praises since. You used to be able to find it in local stores, but I've been stripped of my shopping privileges since buying a pickup truck and camper when Mrs. LHR was out of town tending to her ailing mother last year, so I'm not sure if it's carried in any of our grocery stores these days or not. She still seems sore about that ... 🤷♂️