Why does Turbo Tax deceive you about the cost of the e-file

While completing the E-file in the program it showed it cost $20 to e-file State. It also showed a $10 credit bringing my cost to $10. When paying on the Intuit site they charged $25 with a $10 credit bring my cost to $15 dollars. $5 isn't a big deal but across thousands of customers it will add up fast. 

 

Seem deceptive to me, anyone else?