If prices increase by those amounts mentioned above, then at some point there will be a backlash from Supporters, not just Argyle's but other Clubs too. It feels like football is taking the pee out of the Supporters.
If or when it goes wrong, the supporters who have supported any team, for all their life and feel like they have been ostracised from attending, due to the prices, they will probably not be there when the Club slides backwards. Also those who have jumped on the gravy train, when the going is good, will jump ship.