Yes, fuel costs will go up, which means any goods transported by fuel-powered vehicle to stores, will also increase. Companies that pay more tax simply pass that onto the consumer. 
This isn't rocket science. 
And no, as I have already pointed out to you (which you missed), the goal of reducing GHGs is to bring down the total world amount as that might have an positive impact on global warming. Canada's reduction will have no impact to that goal, but I know it will make progressives like you feel better about themselves. 
At first glance, per capita, 1.6% is mid-to-high range for emissions, but factor in the cold climate (heat), the size of our resource sector, the size of the country (transportation), and the number of animals we raise (methane), it's not significant. 
Canada has no affect on global warming.