I myself haven't gotten scammed but there are multiple proofs of people getting scammed by his Spotify Upgrade service
One guy in his reputation page:
This shoppy link has been taken from his website https://spotyswiss.com/ he advertises that in his signature for example.
Cant really say how much money people have lost to this guy but multiple people who've bought from him say that he's scamming and they never received their products.