Canadians may soon know why they pay more for many products than shoppers south of the border.

The final report of a Senate finance committee study into price differences between Canada and the U.S. is due today.

The committee heard from more than 50 witnesses over a little more than a year, including Bank of Canada Governor Mark Carney, consumer groups and retailers.

The committee started the study after Finance Minister Jim Flaherty wrote them suggesting they take it on.

Senator Joseph Day, chairman of the committee, says the last similar study they took on ended up recommending the government get rid of the penny, a change that took effect this week when the Royal Canadian Mint stopped distributing pennies.