Glass

Flat (with visible fixing screw in metal):
5,5cm = 12,50€ VAT incl./piece
4,5cm = 10,00€ VAT incl./piece
3,5cm = 7,50€ VAT incl./piece

Round :
2,5cm = 4,50€ VAT incl./piece
3,5cm = 5,00€ VAT incl./piece

… and a few fancy models for fun : 7,50€ VAT incl./piece