Ocean Rodeo Flite Gen4, 3-struts light wind kite :
10 m² : 2.76 kg => 276 g/m²
14.5 m² : 3.3 kg => 226 g/m²
17 m² : 3.7 kg => 218 g/m²
I don't know the weight of the 12 and 8 but weight/surface seems to decrease while the surface increases.
One thing to consider is that the 8, 10 and 12 don't have the same construction as the 14.5 and 17 which are built to be very light :
8, 10 and 12 :
14.5 and 17 :