Tupperware is not allowed to sell online. I dare not say that everything on the Internet is fake, but it is too cheap to be true. Besides, the people who buy things in the specialty store will teach you how to use them, and they can also teach you how to make snacks, with no sleep guarantee. Can you buy them online? And you have to worry about whether it is true or not if you buy it online. If it's fake, it's harmless to the body. Only physical stores are more assured.