Just come make a donation to a hospital foundation in the USA they will also vaccinate you, and provide Modena or Pfizer instead of Sputnik.
"Rich Germans" is relative here. This isn't targeting billionaires. 1000EUR (1200USD) for two round-trip flights isn't even THAT much more than what they'd normally cost anyway.
I don't think flying to the US and giving a 'donation to a hospital foundation' would be in the same price range.