Many companies will sell you their hosting plans hooking you in with their $3 per month ‘fantastic deal’. It sounds great you can have a website up in fifteen minutes add a shopping cart ecommerce solution plug in your products and your business is off to a flying start.
Unfortunately it will fly straight into the ground, crash and burn (but only after a great deal of effort and time wasted on your part). This is how I started so I know cheap web hosting does not work.