Maybe it's not that way in "high tech" places (MercadoLibre or Galería Jardin)
Mercado Libre is high tech? I don't see why. Anyway, It's the other way around on Mercado Libre (you can look that up easily). You can probably get both types in most computer stores.
What's hard (or impossible) to find is a cheap, new, US-layout keyboard. Only very expensive models (I had to get an Apple one), or gamer keyboards come in US layout.
Sure. You can write all English glyphs on a keyboard with Spanish layout, and Spanish has always been by far the country's primary language.
Real Programmers don't write in PL/I. PL/I is for programmers who can't decide whether to write in COBOL or FORTRAN.