* 40cm = 2,750,000đ --- 50cm = 3,400,000đ
* 30+40+60cm = 5,500,000đ ----- 40+60+80cm = 6,400,000đ
* 60+80+100cm = 8,900,000đ ---- 80+100+120cm = 11,500,000đ
* 30+40+60+80cm = 7,500,000đ ----- 40+60+80+100cm = 10,500,000đ
* 60+80+100+120cm = 12,800,000đ ----- 30+40+60+80+100cm = 11,300,000đ
* 40+60+80+100+120cm = 14,600,000đ --- 30+40+60+80+100+120cm = 17,500,000đ