Sending BTC from strike to cold storage

I've been DCAing on strike since the beginning of January. I've accumulated a decent amount to the point where I'd be more comfortable sending it to my Ledger. To transfer my full amount they want to charge me damn near $50 and $30 for the standard delivery time (approx 1 hour)

For a 24-hour time frame delivery, it says free.

Does anyone have any good experience with the "flexible transfer" or should I pay the transfer fee?