Night Market
Also known as jj's, in front of the train station on saeng chuto rd. nothing out of the ordinary, but quite cheap as it's geared for locals.
River Kwai Park Market
Right next to the bridge. dozens of stalls selling touristy knick-knacks, but quite a few thais seem to come here for jewellery shopping as well.
Tesco Lotus
Saeng chuto road to the south of town. standard issue hypermarket.
Kanokarn
Off saeng chuto road in the centre of town, behind the area that becomes a food market at night. the first two floors are similar to a western department store. it is sectioned off by brand and sells clothes and electrical goods. the top floor is like the shopping malls found in bangkok or hong kong. it looks like an indoor market and sells phone cases and accessories, manga figurines and vcds.
There's enough ATMs, which all charge a 150 baht commission for using foreign cards, except for Aeon. Their ATMs are at the corner of Saeng Chuto Rd and Chaichumphon Rd, which is the crossing with traffic lights just south of the bus station.