I think all in about $500 and done
Did the guy know anything about the vagrant's medical history or any previous covid infection?
To pay $500 and have a vagrant run the risk of death or disability from a negative reaction to the shot is despicable.
Can definitely see the moral issue but considering the guy was happy to get the $ and it was purely consensual
Don’t think most of the drunken methheads are particularly concerned about long term effects.