Really I'm very upset with this exchange... They have one of the most expensive withdrawal fees I've ever see... I saw this kind of abusive fees in other exchanges like yobit but I tought HITBTC will be a little more serious due to the fact its great volume... They don't need to charge those abusive fees... Really... If they doesn't change their politics I think I will withdraw all my fund from there (despite the fact they will thieve me in every withdrawal I'll make) 
don't worry they will be the One who suffers for their abusive act ,Look at them Now after 2 years of this post . They had already lose their confidence and popularity because of So many issues and complaint ,
They may gain Instant money for Hostaging our Coins ,because we have no option but to use their Platform specially if the Project made a deal with them.
But the Effect on our deeds always Pay ,either to Goodness or badness.
I remember on using this exchange wayback on selling my shitcoins but making conversion to bitcoin and having that ridiculous high fees do really put up in doubts.
Luckily i havent experience any headaches nor problems about hostage of funds or withdrawals but the one thing i do complaint is on that static type of fee
no matter what kind of network condition it does have.