So far I have not seen an official online store that accepts bitcoin payments, if unofficial ones may be many, it is also very vulnerable to fraud.
what do you mean by "official"?
there are a lot of different merchants selling a lot of different products on the internet. some have websites and some only use other platforms like this forum to sell (visit goods board). there are also big companies such as Microsoft that was mentioned above that are accepting bitcoin payments, in case that is what you meant by "official".