Are you wondering about being charged a product fee?
The online products are "Start for Free", meaning you can try the online product and only have to pay for the product if you decide to print or file. You have no obligation to complete the return and file it.
If you do decide not to use TurboTax, you can clear your return before you leave as long as you have not paid or registered. Here's how:
https://ttlc.intuit.com/questions/2586254-how-do-i-clear-and-start-over-in-turbotax-online