besides queen street 170 bus terminal, i think it 'll be cheaper to cross over to JB by foot, then take a cab from there, it'll be cheaper. there will be touts at the customs, just walk into the shopping mall and exit, you will see more taxis there in queue.
When walking from the CIQ to City Square Mall, the 1st taxi stand you'll see charges extra $ because they have to pay the management a cut to use that stand. This is where you have to take the escalator or lift down.
If you don't want to pay extra just walk a little more & you you can take a cab on the road between the rail way & City Square Mall. I was there last week & some cabs still refuse to use the meter

