Those jorgensen 23 euro clamps look exactly like the harbor freight aluminium bar clamps I bought, except the paint color. I think they were $10 several years ago. I suspect they come out of the same factory.
I bought 6 36 inch clamps and reinforced them with a thin strip of high quality 19mm plywood, which slips in just right.
I like them well enough for glue ups. The light weight is nice. They definately could break if one tried to exhert high pressure.
I certainly wouldn’t call them ‘high quality’, but I think I like having 6 of these more than 2 higher quality ones, which was my choice at the time.