Well all jokes aside on that-game-that-will-not-be-mentioned-here, for starters:
1. ALL in game assets are the property of FDev by default of the nature of the game being a persistent online/MMO format. aka ED is NOT an offline, single player game like Fallout 4, Skyrim, etc etc.
2. By default of being the dev, FDev is the only entity authorized by game's EULA and TOS to set whatever real life/virtual currency rate of exchange exists in the game universe. This is explicitly manifested in the use of Arx which can be earned in game and/or purchased in the store.:-
Use Arx to buy customisations for your commander, ships, SRVs and fighters.
arx.elitedangerous.com
3. So in addressing the OP's inquiry, this process appears to be a clear violation of the game's EULA and TOS where virtual v. real currency exchange exists.
Which is likely why the OP opted to "ask for a friend" by posting on the forums in the first place