As the number of products increases so does the difficulty of web design 
for niche marketing, so when deciding on products to sell in the online 
shop choose just a few and become an expert in those.  Small business 
websites should cater to small niche markets - the most effective sites 
are those that help people get the information they want when they want it.

It's not enough that people say they like your web design. There must be 
enough actual buyers on a regular basis to generate profits in the long term.

Test, test, test - you can't do enough testing in niche marketing. Who 
will buy from the online shop? How much product? How much will they pay?  

It is important to be able to identify your target market and estimate it's 
size and likely buying volume so in turn you  can tell if your product will 
viable.  Picking the right target market group is an important step toward 
achieving sales large enough to ensure the success of your business.