Damn! Any airdrop asking one to pay is scam. Also, I usually advise crypto enthusiasts, don't just click any random site you come across, some will even install spyware to your device. Some sites will ask noobs for private key or keystore, in a bid to hack their wallets. Let's be guided please.
Just a little bit curious how could you even call it an airdrop if you need to pay in order to receive it?
People are surely being blinded by their greed if they would fall on to this kind of tricks.
And also those airdrops that would ask for private key or keystore is clearly a scam so how could anyone fall for it?
Those new in crypto should be guided properly and know the difference between scam and legit airdrops if they want to join airdrops.
Maybe asking for their information. That's the payment that they're gonna conduct.
About your second statement, it was too good to be true of a MEW site to collect my tokens back when I tried to register into one of the airdrops.
People should probably use disposable email address for these kind of acts, because it is everywhere from what I can see.