Is the Evaluation Fee refundable?

It depends on the challenge type:

Core: Yes, 100% refundable, reimbursed with your first payout after you become a OneFunded Trader.
Flash: Yes, 100% refundable, reimbursed with your first payout after you become a OneFunded Trader.
Value: Yes, 100% refundable, reimbursed with your third payout after you become a OneFunded Trader.
Instant: Not refundable.

If you don’t pass the Evaluation, the fee is not refunded.