Ticket for Eintracht Frankfurt - St Pauli

I am travelling to Frankfurt for some work courses. I have a spare day and I see Eintracht Frankfurt plays against St Pauli this day.

Is it possible to buy ticket from the home page ?

If yes, do you know the price and it is possible to get some guidelines ?

It's already sold out.

Because this is the last home match of the season, it's almost impossible to get any tickets. Even as a club member. Sorry.

There will likely be single tickets available on the ticket exchange spontaneously on match day. However, if you're traveling in a group, it will be very difficult to find seats together.