Hello Pjcho
Choosing a descriptive subject is helpful as everyone has got a question 🙂
No, it is not cheaper.
The prices you see as a guest are by default ‘from prices’, starting by the lowest fare possible, the Supersaver fare with Half Fare Card.
When you proceed as a guest, and you do not have the Half Fare Card (reduction card setting = no reduction card), the system will also double the ticket cost, just as it does when you would have an account.
Kind regards,
Roland