When 2018 purchase and price?

[DoninGA]

You can pre-order the 2018 desktop CD/Download editions which will be available in November from this website - https://turbotax.intuit.com/personal-taxes/cd-download/

The online editions are normally available in December

[Critter]

When can I file for 2018? 

The online software is not yet available for a 2018 return, no date has been set yet but usually early December is when it opens.  And the Downloaded versions usually come out in mid to late November BUT these are only beta versions and are not fully operational until sometime mid to late January and some forms & state programs are not ready until sometime in February.   

Due to the massive tax reform expect things to be delayed this year but when the program is operational it will have incorporated ALL the changes. 

Everyone should be wary of filing too early this year as the system will be quite buggy for a while.  Last time there were massive late changes some folks who filed early in January got "stuck or lost" in the IRS system for months so patience will need to be exercised this year for sure.