This is not an enterprise for the lazy. eBay sellers need to respond to customers quickly and politely, and ship items promptly. A seller’s success is in eBay users’ hands after all; a negative seller rating can sink an eBay business before it even gets started. Sellers also need to familiarize themselves with eBay’s return policies, which tend to focus on making the overall experience better for buyers but not necessarily for sellers.
Expansion is limited. If your goal is to stay a sole practitioner, this is not a problem. But if success for your business requires additional employees, you will likely outgrow the space you have at home. Moreover, do you even want employees in your home? You sacrifice a great deal of privacy and personal space when you allow others to work with you, especially if you don’t have dedicated space in your home.
Concentrating all marketing efforts on a small but specific and well defined segment of the population. Niches do not 'exist' but are 'created' by identifying needs, wants, and requirements that are being addressed poorly or not at all by other firms, and developing and delivering goods or services to satisfy them. As a strategy, niche marketing is aimed at being a big fish in a small pond instead of being a small fish in a big pond. Also called micromarketing.