The minimum cost of 3mm clear glass+0.38mm+3mm clear glass is US $10~$12/sqm.
The cost varies big with different compositions and thicknesses.
Glass thickness: 8mm+8mm is two to three times expensive than 4mm+4mm.
Different PVB layer: there is a big price gap between 0.38mm & 1.52mm interlayer.
Heat-treated: annealed glass, heat-strengthened and tempered glass varies big.
Other factors: glass yielding rates, shaped glass, glass with holes, etc.
