We can offer any size you want. Please use following price list and rate, then according to size you want, calculating price by yourself. If you have any question please contact chinesepainters@yahoo.com .
If the size is under 24x48 inch, list price includes air mail cost. For any bigger size, we have to use FedEx or DHL delivery, then please add US$50 for first piece, and US$20 for every one more piece.

Size inch	12x16	16x20	20x24	24x36	24x48
Size cm	30x40	40x50	50x60	60x90	60x120
Price US$	100	110	130	160	200
price US$ per square inch	0.52083	0.34375	0.27083	0.18519	0.17361
Price US$ per Square cm	0.08333	0.055	0.04333	0.02963	0.02778

1.00 inch=2.54 cm