You’ve reminded me of the HOA “Welcome to the Neighborhood” Fee, I think more typically called an “initiation fee.” Typically around 0.5% to 1.5%

Apparently agents typically recommend the seller wrap it up into their side to make the deal more smooth and appealing to the buyer such that we never noticed when we bought into a neighborhood. Of course you can imagine the feeling of paying a do nothing management firm you despise many thousands for the privilege of getting the hell out!