book to book transfer

I have money at bookmaker ($600) and want to transfer it to 5dimes

5dimes is saying there is no fee for the transfer (to and from)

Bookmaker is trying to charge me $100 fee to transfer...

So I ask, Is this normal fee for transfer ? 

5dimes customer service was shocked about the fee bookmaker is charging !!

Seems really high to me...especially considering its an email between books (no 3rd party involved)

Any help is appreciated..ty

that is bad. I have done transfers between 5dimes and heritage and there has never been a fee either way.