To edit the price type, go to the Admin.

Go to Settings → Tickets → Price types. Search the search bar for the price type you want to adjust, or look in the list to the right of the search bar. Click 'Edit'.

The screen to edit the price type now opens. Here you can edit text, grouping, attributes, etc.

After making the changes, don't forget to click 'Save' at the bottom of the page.