77 dollar equals to 0.047 ETH.
Although ethereum network is so busy, the required fee shouldn't be that high.
The transaction fee can be calculated as follows.
Fee = Used gas * gas price
For an ethereum transaction (a transaction in which no token is involved), 21,000 unit of gas is taken. So, the fee equals to
21,000 * gas pricePaying 0.047 ETH as transaction fee means that the gas price had been set to 0.000002238 = 2238 Gwei.
According to
ETH Gas Station, current required gas price for a fast confirmation is 150 Gwei.
Edit:
As stated in the post below by JeromeTash, due to using smart contracts, the fee you have to pay is much higher than what I calculated above.