Scams in Shops
The most common one of these is the fake login page. They pretend to show you items at a super cheap price, but the are fake pictures, and instead of buying the item, you instead get taken to another webpage, that is not on neopets.com. It then tells you to login, but don't do it. They'll steal your password. Thank god Neopets finally put a stop to it . . . 3 years after they first knew about it.
One scam I fell for a few times was when they put something for cheap and jack up the price. Like a codestone for 2,000, then they change the price after a few seconds to 20,000. Just be wary, and when the thing pops up to confirm, make sure. It's worth it to not get scammed, especially when the price looks a little too good to be true.