Caveat emptor, buyer beware, due diligence -- whatever the term, we all get the basic idea: the onus rests on us, as customers, to understand the product or service we’re purchasing. Canadians usually take this concept to heart when buying big-ticket items like cars, televisions, appliances -- even houses -- but sometimes they don’t do the work they need to when it’s time to get a mortgage. They see a great rate and simply say ‘that’s the one for me’ without paying enough attention to the all-important fine print.