You are not free to do business your way. Each country has formulated specific trade laws for eCommerce that every seller must follow. But some rules are common for most in most countries. Some of them are:-

1. Taxes:

Taxes are compulsory in whatever business you are involved in. Especially eCommerce is worldwide like export duties.

2. Legal actions:

Business poses a risk when customers get a defective product. They may file a consumer case against you for delivering a defective product, and you may be slapped with a huge fine. There may be cases when customers use destroy products to get a refund from you. Everyone does not think about the positive way.