Anyway, it is very difficult for a novice without a master, which means that a novice doesn't even know the simple trading process and how to identify a liar buyer. I suggest you open an online shop or virtualize it. Virtual is easier to use, and there are no logistics and quality problems. The transaction can be easily completed in a few minutes, and there are logistics problems in selling goods, which are uncontrollable factors and often lead to some disputes. So I don't advise you to choose physical objects. Of course, you have to choose a good seller to do a virtual simulation. A good seller won't tell you how profiteering it is and how much it is. He will only patiently answer your doubts and tell you his experience without reservation, which will save you a lot of detours, because the seller is generally directly responsible for the buyer's after-sales service.