Hmm you cake selling via Facebook marketplace the safest small business just because you believe you can lose money. What of the product you are selling, is it everybody that will buy the product at once?In my opinion, the safest small business is selling via facebook marketplace. Losing money on this business is less than one percent. You do not even have to create your own website or pay for listing on third party site, of even pay commission to the site where you list your products. My friends started selling through Facebook Marketplace by investing less than $10. Some of then are making $200-$300 per month profits.