I stand before the choice to extreme modding me a season 6 account for 120 euro to buy or 13500 vbucks
I would like to have your worries
1. Do not buy accounts because they may be banned (against the Fortnite Terms of Service)
2. Do not buy so much in-game content. Thats literally wasted 100 euro. You no longer get access to content but only emotes / skins you can specify. For 100 euro you can buy many very good games or upgrade your PC. I would not really recommend spending so much money on a single game that may not interest anyone in a few months or years. The Battle Pass is an exception. Is also a waste of money but "worth" (of the prices) relative.