Scams are to be expected. Especially around this time of year when millions upon millions of people will no doubt shop online in an effort to get the best deal possible. Look before you leap. And after you've leaped be sure to keep looking to see where you mind land.
As case in point head over to McAfee's AvertLabs blog to check out (no pun intended!) how far some sites go to obscure the actual cost of a product and how they try to trick people into paying the price (Ok, that pun as intended).