Hello there! In fact, TrustDice does not take withdrawal fees, what you pay is the blockchain fee, which depends on the Bitcoin network. Normally, when BTC price goes up, the transaction fee goes up too because more people want to make transactions. You can check the details here.
How do you explain that?
Here is the fee that was deducted from me on withdrawal: 0.00001271 BTC
Here is the screenshot of the cashout transaction. Here you can clearly see that my cashout was sent with: 0.00000304 BTC
You state that you are not taking any withdrawal fee and I only need to pay the blockchain fee. The blockchain fee of my wihdrawal is 0.00000304 BTC.
0.00001271 - 0.00000304 = 0.00000967 BTC
So where is my money? Who has stolen 0.00000967 BTC from me?