Buying Tupperware Online certainly has advantages. Here are some of them.
First of all, you can compare many different products. This way you have all the time in the world to make sure you are buying what you need. It is also easier to become aware of your options: the right sizes and shapes, and getting the best deals too.
Also, it is much more convenient to shop from your home. You can save time instead of getting dressed, driving to a shop, dealing with incomplete product inventory, wasting time in lines, coming back home. You know the drill.
The best thing about buying online is how stress-free the whole experience becomes. No people bothering you, no shop closing times. You can browse around all you want and no salesmen will look at you weird for it. You do everything at your own pace, free of pressures.