That's the problem, this is the reason why people don't believe in the so called airdrop, imagine asking for tips in the onset, with what I know airdrop is been done for free so any inventors asking for money should be regarded as a pure scam.
But what I don't understand in this case is if binance can allow themselves to be used to perpetrate scam, though exe changes are capable of doing anything and they pretend a lot, but people wanting to part of airdrop should be careful of this projects everywhere.
Many scammers are out there looking for whom to rip off there funds but one thing is sure, if we can stay out of this free stuffs we will be free from scams in this business.