My question is up!
I have already tried both on Ebay classified ads, but my ads were deleted.
Do you know any good sites where I can either sell a softair (G36C) or Playstation 4 games from 16 and 18?
Rebuy.de
Anywhere, as long as you always describe it with FSK18.
eBay, Shpock etc.
Normal eBay. (eBay.de)
There you only have to select the shipping method: DHL Parcel with age inspection from 18.
I always took eBay and the USK 18 steam games quickly went away.
Airsofts can be sold, for example, in the ASVZ
