unibet Euros in and out no currency exchange fees or processor fees for me also the same thing with william hill and bet-at-home get the Euros without any fees that are associated with many of the other sites changing dollars to euros for me.
It might depend on your jurisdiction, withdrawal method or withdraval amount, but I dont pay fees to withdraw on either pokerstars or 888 Poker. On PokerStars depositing and withdrawing involves currency exchange though, and they charge me through the exchange rate. Just like banks or transfer services like Western Union.
Fees may incur based on withdrawal method, region and currency conversion.
Most rooms I play on have no deposit or withdrawal fees for the most part except for some certain methods. I use USD on all poker rooms and all my ewallet/bank accounts and cards are in USD so no currency conversion fees for me. Also in almost all cases I make a few cents with doing a withdrawal or deposit as I get cashback from ewallet optimizer.
Pokerstars - ecoPayz, skrill and neteller free
888 - Neteller free
ACR - ecoPayz free
BOL - Skrill and Neteller free, ecoPayz has a 1% fee
GG Poker - Both Skrill and ecoPayz $1 fee