I understand that you are 'miffed' with the price increase.
My Platinum membership has increased by $45 to $690 and I don't have any qualms about that given that, to my understanding, similar memberships at clubs such as Richmond, Essendon, Pies, Dogs etc are many $100's more (with a long waiting list).
A couple of my Dogs-supporting mates dropped their premium membership after the club radically changed the cost and entitlements of their membership following their 2016 flag.
The Tigers did likewise following their 2017 premiership.
It's supply and demand, but I reckon our premium membership packages which include a gfg are reasonably priced.