inches centimeters paper canvas
10*10 25*25 $60 $90
12*12 30*30 $75 $100
12*16 30*40 $100 $140
14*18 35*45 $125 $190 
16*16 40*40  $140 $200
16*20 40*50 $160 $250
20*20 50*50 $175 $300
23*18 60*45 $200 $350
20*24 50*60 $210 $400
22*27 55*70  $270 $450
23*31 60*80 $350 $550
27*35 70*90 $425 $700
27*39 70*100 $460 $800
31*40 80*100 $550 $900
35*43 90*110 $600  $1,000
40*40 100*100 $700 $1,100
40*50 100*130 $850 $1,250
39*47 100*120 $875 $1,350
40*55 140*100  $925 $1,450
45*55 115*140 $950 $1,600
55*55 140*140 $1,000 $1,800
40*80 100*200 $1,100 $1,900
59*80 150*200 $1,300 $2,200
69*80 175*200 $1,500 $2,400
59*80 150*250 $1,700 $2,800
59*118 150*300 $1,900 $3,000