W/o question the NW. Liberty Bell area and Squamish. .Then hit Skaha and Banff.
Squamish is easily the cheapest and most convienent place around. I spent the entire summer there last year and was always mixing it up b/t sport, trad and bouldering.. And if you do it right.. you never have to worry about crowds.
Gunks are hot and expensive! REALLY expensive. the free camping is totally cool if you want to have to fend off dirty hippies trying to bum food and beer. not to mention the theft that goes on down there. Great climbing but the summer aint the time to go. .