I added combination of good and bad because ebay is the best online services which provides -Business to business services,
-Business to customer services,
-Customer to business services,
-Customer to customer services.
It is the best online shopping which provides all these services with in a short period of time after you make an order.
It is also bad because sometimes the services are late which may leads to discomfort for consumers. But it provides variety combination of all products.