I usually try to get refills for my Canon eight colour printer in Big C, or failing that, in the one shop that seems to have them in Central. I've been to both the stationery shop and the computer shop (the one next to 'Beautyland') in Chalong, but they have limited supplies. Is there anywhere in Phuket town perhaps, with more choice?

there is a shop called Phuket Ink Suppy located in Villa Samkong. if you are coming along Yaowaraj road, just after you cross the bridge and before the Samkong intersection is a left turn into the estate. The shop is about 50 metres down on the left.