texan, i found out who did the windows you like so much:
Cordero Industrial
C Rafey 29
Clasificado: Ventanas / Aluminio
(809) 570-4508
i also asked about prices, someone i know had them installed in his house (large place, maybe 500 sq meters) and the cost was 37k dollars.
I don't think I will spend that much on windows. You can see why that was their house to show everyone on the tour.