i just bought one, especially for my LOS visit
Sony T33, 5.1Meg very small and handy US$349
they have another one. Extra slim and that will fit into your wallet. Model T7 and that goes for $449. that also 5.1 Mega pix
Nikon and casio also have some very nice stuff. check it out.
I am sorry don't know about the prices in BKK. According to my friends they are expensive, because of the tax. if you need any latest prices let me know i will send a post.
Regards.