Try to talk with the support, for sure they will give you a better awnser.
First guy never used site but he thinks there is fee, 5000 satoshi(maybe), and second guy gave him +1 on that and add additional 15K satoshi fee on his 5K fee, its good that another signature spammer didn't come with +2 and add on 20K fee another fee.
To OP: check this thread https://bitcointalksearch.org/topic/ann-faucetgocom-bitcoin-faucet-high-paying-clean-design-instant-payout-1616986, it looks like site is paying, try to contact support or PM admin here in bct. There is no transaction fee in this faucet, withdrawal should be instant after you ask for it:
As an additional measurement to confirm that you are human, we need you to sign in using Google (one time only). Our apologies if this is not convenient for you, but we need to do this until we find a better alternatives to fight bot.
Yeah nowadays it is to hard for the human mankind to read a single website even the instruction on it - the only thing the people see is BTC-Address/Captcha/Claimbutton/REWARD also the withdrawal errors noting else - but all the adnetworks want great content that nobody reads, srsly ... thats how it works sad but true