It's not high. For example, if you deposit 0.01
BTC in FaucetBox, your account will be credited 0.0097
BTC. Anyway, if the fee is the problem you can use Paytoshi and if they charge fees later(most probably they will
[1]), you can stay with them if the fee is lower or migrate to FaucetBox.

[1] They just launched it. So now it may be free but if they get many owners, they may charge fee.
~~MZ~~
We don't usually monitor other threads, but we stumbled upon this post.
As we have
stated before,
we value faucet owners as the driving force behind our micropayment system, so
we will never charge any deposits.
We charge, instead, a small fee to faucet users, but
we empower them with the choice to set their own payment threshold, so that they can lessen the impact of fees on their balance.
That's
our philosophy

Paytoshi or FaucetBOX or ...? They (we) are simply different solutions to the same problem: handle micropayments and faucets.
We value diversity and we think that's simply great that
you, faucet owner or user, now have the possibility to choose.
Hope to have clarified our stance.

Sorry for the intrusion,
Cheers