I am designing a checkout cart for a translation company.
I need a simple HTML form consisting of a textarea field and a submit button. The page that the form is in should have text reading "Words: 0" and "Price: $25". As the user types in the text area, the text reading "Words: 0" and "Price: $25" should update automatically to show the correct number of words and correct price. The minimum price is $25, but once a 26th word is entered, the prices should increase along with each additional word.
Once the user hits the "submit" button, the textarea, word count, and price should be passed as form variables.
The form has to be very stable and work exactly as described.