> I'm sure if they didn't keep the prices somewhat similar, you would have a bunch of people in Europe selling RAM to Americans.

I was just about to edit my response to the GP to say the same thing. Let's explore this hypothetical situation a bit further.

Suppose there was a DRAM manufacturer named "Acme DRAM" which decided to have a separate pricing schedule for the EU reflecting the lack of insane US tariffs.

Some enterprising entrepreneur in the EU would establish a company in the country having the least US tariffs and resell Acme DRAM to US companies. Surely this would make money hand-over-fist.

Problem is, the US DoJ does not look kindly on this kind of enterprise:

  DOJ also has demonstrated a growing willingness to pursue 
  criminal charges against companies and individuals involved 
  in customs fraud schemes such as the purposeful 
  misclassification of goods, falsifying country-of-origin 
  declarations, and intentionally shipping goods through 
  low-tariff countries. Importers of goods into the U.S. 
  should expect criminal enforcement to accelerate in the 
  coming months and years.[0]

All of this risk in the pursuit of lower profit margins by definition.

0 - https://natlawreview.com/article/what-every-multinational-co...

Huh? It's not the manufacturers paying the tariffs, its the importer? US tariffs do not affect the margins of the manufacturer.