The fees are to prepare the return. The fees are the same if you efile or print and mail. If your refund is not big enough to cover the fees PLUS the Extra $40 Refund Processing Service charge (45 in California) then you have to pay with a credit card. You can still efile.
How to see your fees
https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-review-my-fees-in-turbotax-online/0...
How to mail a return from the Online version
How do I print and mail my return in TurboTax Online?
Be sure to attach copies of your W2s and any 1099s that have withholding on them. You have to mail federal and state in separate envelopes because they go to different places. Get a tracking number from the post office when you mail them for proof of filing.
