I have an aStore site on
Simpsons DVDs.
Domain was reg'd, site put up and indexed in January and so far i have made £2.02. Not a great deal but if it carries on this way it will pay for the reg, hosting and have a couple of quid left over.
Accelerator is right though, you need to get traffic to the site to make any money. Simpsons DVDs is on the first page of google.co.uk for the term "Simpsons DVDs".