An airdrop asking for $9 to deposit for KYC? I didn't get you may be but if the above statement is correct, I think the project is a scam one. Why they ask for $9 for KYC while they can simply ask people to complete the KYC? You should certainly avoid this.
I also think that it's too cheap for a KYC. but believe, that there will be very many people who will give the KYC they have to get the airdrop. I have seen this often in social media groups. quite a lot of people sell their identity at low prices.