The standard size for a commissioned piece is 30cm by 40cm (A3) the price for a single subject at this size is £500 plus postage. Please contact me with photos to begin with to discuss your requirements. Any size is possible from A4 (20cm by 30cm) at £300 plus postage up to a maximum of 100cm wide by 200 cm long - please contact me to discuss pricing for bigger paintings/multiple subjects.