Subject to availability. Just like Genting free room, expect only week day and one way only.
Another thing to expect , it might add only 1 ticket for a time until it consumed.

Don't forget, TF is real con man like a politician.

I won't surprise.

I guess their tactics are:
- sell as much as possible as no limit of unlimited pass will be sold mentioned
- limited slot for certain flight (refer to T&C: subject to availability, but never mention how much it how many available for every flight)

Imagine 20k of unlimited pass sold, but 10% of the buyers want to book the same period. You will be disappointed.