It is 25$ worth not 40$ worth.
But in return, they are asking for personal information and a kyc. 25$ worth your kyc is something debatable.
I did my kyc process to try to see if indeed they are really having that XLM giveaway but unfortunately, until now there is no update on my dashboard whether I did passed or failed that KYC and its been nearly two weeks already to the point that I've been thinking that I did took that risk by submitting my identity in exchange for nothing at all.