Making your own website with shopping cart is not easy, takes sometime to learn the shopping cart, learning curve is very steep when no one teaches you. There are graphics preparations which is another skill. OK, let's say you are goog at both and have the attractive and flawless website finished, you have to SEO it, which is another skill that is a professional skill itself. The comes maintenance, your visitors will drop you fast if website is not updated on frequent basis.
Many people own websites or online business, but most don't get desired number of hits or simply failed and disappeared after 1 or 2 years.
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