Can't make a profit from it, either.
Depends on the deal you make with the SFS trust
Our gate averages have been higher since memberships came in because people (like me) have already bought tickets and turn up anyway when normally we wouldn't.
We buy beers, pies, pizzas, water, crisps, chips, merchandise etc (I bought ALL of these things last season) and the revenues earned on these things for the Trust can be used as a bargaining tool to reduce the costs to play at the SFS.
The other bonus is that is spreads the income for the season across the season.
Members who pay in the off season may not do so if packages are more expensive. They may wait a few rounds to see how the team is going. If they are doing well they may decide to buy a reduced price pass for the second half of the season. If the team goes badly they stay at home and don't bother showing up and the club loses out. There's no profit in no one turning up at all either.
The Roosters have a hard gig - they are trying to survive in a crowded market where they are vying for about 30% of what is already an artificially altered small area.
Family members of mine who are born and bred in Coogee follow Souths because Souths "represent" their area. They live about 100 metres from Clovelly Road ffs, right in the heart of the Eastern Suburbs. How are they not Roosters?
Add to that the drain from AFL, Rugby Union and football and the Roosters need to do whatever they can to not only entice their existing fans out of the woodwork they also need to try and attract new supporters. Offering amazing value for money for a season ticket is part of a much longer term plan.