There are lots of places where you can pay with bitcoins and the places are onlyu growing because i know for sure that more people wil use bitcoins in the future.
yeaaa even an official game site such as steam already accept bitcoin since few moths ago.
the marketplace of bitcoin keep growing , it is grow year by year.
and sooner or later people will see a large site accept bitcoin such as ebay or amazon.
for shopping in amazon and ebay, we use third party that already available like shopawl or others. i am agree that in future, many store online will available for us to buy product and paid with bitcoin.