Interesting... why don't you reply to kishleo's question with some proper answers instead of digging up what he/she posted in the past and then give a no-use reply? (anyway a dig on your past posts showed that u kinda like to post such nonconstructive things, I hav no idea why)
In general, an low/average budget 4d3n tour to cambodia for about 4 persons should not exceed $300 per person (inclusive of driving around, tour guide and hotels)excluding the airfare, so a weekend tour of say 3d2n should be around $200+ at most. Any quotes from operators higher than this amount = reject them straight.
Restaurant food there is rather affordable, you can get a good meal easily at less than SGD10.