Niche marketing is not a new concept and is based on traditional economic models using supply and demand to plot the long-demand curve. Due to geographical reasons and consequently transportation costs, reaching a critical size market that can be defined as a niche can be a challenge. Thanks to e-commerce and ever more efficient logistics within our economy the challenge is much dispelled. Niches can now be served across the globe and when quantified globally are quite sizeable and attractive.
Imagine an obscure, strange product that most people would never even think about paying a single dollar for. Now imagine that a very small percentage of world population adores the product and is willing to pay quite a bit for it. Offering that product online in a reasonably priced way can be quite lucrative. Thanks to e-commerce we can now sell these products to these individuals and still make a profit at low quantities assuming margins are high enough.