Was just going through it, and they've got some good ideas.
15% off GA tickets, so if you bring your mates you can buy them tickets. They have access to the 'Black Hole', so you can go there and sit with them if you're in an allocated seat with no room next to you.
Also most of the memberships get a $50 or $20 voucher to spend at outlets at the stadium. Not sure if it includes merch or food/drink or whatever, but you have to spend it in one go and don't get change, but that could make a jersey affordable, or get you a few drinks, maybe even get you half a meal.
What really caught my attention were the memberships that don't include a season ticket.
$70 for the Paws membership and $100 for the Black Panther membership.
Besides a whole heap of merchandise, the 15% merch discount and access to member only gear, the Paws membership includes a family pass and the Black Panther membership includes 4 GA tickets. Something like that could be great for out of towners who only make a couple home games.
Also exclusive member events.
http://penrith.panthers.com.au/Conte...Booklet%20.pdf is the brochure.