When using the online version of TurboTax as you did, you pay for the use of the software. It doesn't matter if your e-file, or print, sign and mail your return to the IRS. The price is still the same regardless of which filing method you may use.
With the CD version of the program that you physically install on your Windows or MAC computer, you pay one price for the software. Then you can use that software to prepare and file as many returns as you like. However, per IRS limitations you can only e-file a maximum of 5 federal returns. After that, you have to print, sign and mail additional federal returns to the IRS.
