Whoops, assumed you were American from your choice of layout plus always talking in dollars! Welcome to the European ANSI club. I prefer it too.
Interesting caps you linked:
Those are
double shot PBT. Double shot is the ultimate way to make caps. Superb legend quality and ultimate durability: the letters go right through the entire key! Fancy caps GBs are usually double shot. But until very recently double shot has always been limited to ABS.
The bad news about those caps is they're made by Vortex. Those guys have a poor reputation for making crappy products. And you can see it in their choice of lettering on those keys. They seem to be mixing the Cherry font and CM's gamer styles, and getting everything a bit wrong. But double shot is double shot. These caps could well be solid, if you can live with the oddball lettering.
Another thing to look out for as you're here in Europe: import taxes. Everything costs more than the price tag when you import from outside the EU. Well, unless it's straight from China and has a dodgy declaration! American retailers will always declare it right, though.