Can I print unfiled return before I pay?

No.   If you want to print your return to review it before you e-file, you can do that, but you have to pay your fees in order to print.

https://ttlc.intuit.com/community/printing/help/can-i-print-a-copy-of-my-turbotax-online-return-before-i-file-it/00/26244

Yes, if you pay the TurboTax account fees before filing you can view or print the complete tax return.

Click on Tax Tools on the left side of the online program screen.  Then click on Print Center.  Then click on Print, save or preview this year's return.  Choose the option Include government and TurboTax worksheets