There is 1 lesson to be learned from that, never take the first offer. 
When my friend began to get these emails they also started with 25$. Some time later is was 50$. Then the announcement of the upcoming mandatory KYC came and they offered 50$ again. Some weeks later it was 100$ and then up to 250$.
Told him from the beginning to wait, he wanted to do it when they offered 50$ but I advised him to wait again because I had a feeling it might get more, and so it did.
When my friend began to get these emails they also started with 25$. Some time later is was 50$.
Then the announcement of the upcoming mandatory KYC came and they offered 50$ again. Some weeks later it was 100$ and then up to 250$. Told him from the beginning to wait, he wanted to do it when they offered 50$ but I advised him to wait again because I had a feeling it might get more, and so it did.
Just heard about this story, so basically delaying the KYC for higher offer is worth for those who do not mind to do KYC.
Wondering how much will be offered to those whose 1st offer was $250, will the offer increased as well if the players delaying it?
Lucky them who get the offer for KYC, we are those who did KYC for free without any bonus LOL.