I have used eBay for years now, successfully I must say. This success, however, has only been due to my good understanding of the limits of the service they offer. If you are shopping on the second-hand market, eBay is probably the best place in the world. Their ability to connect buyers and sellers, as well as the availability and selection of used goods are unsurpassed.
But that's about all you get. They fall short in almost every other segment of their operations. EBay is ripe with fraud due to the decentralized business model they adopted, which they are unable to keep under control. Their competition beats them in terms of quality of service, consumer protection, customer support, price competitiveness, shopping experience, website functionality, and security. EBay is unethical about their advertising practices. Their consumer protection program is rather nonexistent. Yes, you will get a no-hassle refund for purchases of $5 or $20, but see what happens when you get swindled out of $200 or more. Scripted responses, plenty of runarounds, and sweeping under the carpet. In those cases customers don't come first any longer.
EBay PR folks, please don't bother responding to this commentary, just let it be. Nobody cares about your damage control efforts. Reinvest your creativity into improving customer experiences on both ends, it will be beneficial to all of us.