Glass wall - where to buy?

hi guys,

nowadays i can see a lot of houses, when the owners do the extension on the front, they use tampered glass instead of conventional brick + aluminium window frame + glass to make up the walls.

would like to gather some info from you all where i can buy these glasses. are they cheaper compared to red/white brick? what is the thickness i should get in order to last long (eternal) and no worries of being broken by thrown stone. besides green, what other colours of option?

i know some guys are from design firms, but instead of calling your numbers and sit down for discussion + quotation, i would prefer we share opinions here.