A good price isn't the only thing to consider before you take an item home; it pays to weigh the risks as well. Skip secondhand mattresses unless you're willing to chance a bed bug infestation. You'll also probably want to avoid anything with heavy upholstery, such as couches and armchairs, to be on the safe side. Even more important, do your homework before you buy baby items like strollers or high chairs. Find the model name or number, and do a quick search on your phone to make sure the item meets current safety regulations and hasn't been recalled by the manufacturer.