We contacted vgmdb twice about wanting to be added to the link section, but after waiting a total of 4 weeks without reply, we started looking around and noticed that it was possible to add links manually.
Since none of the other sites used affiliate links, we assumed that the site owners added the links themselves and decided to do so as well.
If there is anything else we need to do, please let us know and we will be more than happy to comply.
About the stock: We would prefer to delete links whenever an item is sold out, so users are not lead on our site just to be disappointed. Unfortunately, we were not able to find a way to delete links.
About the currency: Since our business is in Japan our base currency is in Yen. While we could change the currency to a different one, it would still result in the same situation for everyone who is not living in the country of the chosen currency.