was this a joke? Sorry just having my coffee. If they have different finishes, features, sizes, thicknesses how are the same? Material? Did I miss something? Did they have identical performanc?
Depends on the specific tool, but if you check the wrenches in question, they literally are the same.
Mac:
USAG:
And the facom uses different broaching - 12 point box end and different anti slip profile.
Keep in mind MAC is not sold in Europe.
17mm Mac is listed at 43$ on their website. Harder to find individual USAG wrenches since they don't directly list the price, but the 17mm is 16.20€ on Italian ebay. Facom costs about the same too. I bought my 8 wrench set (8-19 sizes, skipping 9, 11, 16 and 18) for 95€, or about 12€ per wrench.
Facom and USAG are primarily sold to industrial European buyers. You don't see these brands in most general hardware stores (you also don't normally see hazet or stahwille, but you do e.g. see wera and knipex in any bauhaus). They are priced to compete with other European brands.
The Mac is priced to compete with US brands like Snap On.
I don't think the quality is actually worse in any way. They don't offer Mac in Europe at all, there is no real comptitions between those brands and no incentive to offer a lower quality product under the different brand names.
It really should not be surprising to offer different prices for different markets. A new Honda CBF125 costs 3000€ where I live in central Europe. In South Africa it costs under 1000€ for pretty much the same motorcycle.