Obtained 2 different quotations, are they reasonable?

To fabricate, supply and install 12.38mm laminated glass with mild steel frame.
16' x 8' = 128sqft @ RM50 = RM6,400.

To fabricate, supply and install hollow skylight c/w 10.38mm laminated glass with mild steel frame.
16' x 8' = 128sqft @ RM48 = RM6,144.

Any supplier can provide cheaper than this?

De skylight & igate respectively.
Having said that, do we need 12.38mm or 10.38mm will do the work?

This post has been edited by ahooi99: Apr 21 2014, 06:56 PM