From
https://www.tottenhamhotspur.com/tickets/ticketing-charter/
There are three distinct concession categories. Supporters of the following ages, as of the first day of the Premier League season, will qualify for concessionary pricing in designated areas subject to availability:
Junior – Under 18
Young Adult – 18-21
Senior – Over 65*
*From Season 2025/26 the qualifying age for a Senior concession will come into line with the State Pension Age (SPA), i.e. 66 years, and will rise in line with future changes.
For the 2024/25 season, where available, concession discounts on Season Tickets and Match Tickets will apply at the following rates:
Junior 50%
Young Adult 25%
Senior 50%*
*The allocation of Senior concession matchday tickets will have a 25% discount applied from Season 2025/26, in line with Young Adults. Matchday Junior concessions will continue to be discounted by 50%.
*All Senior concession Season Tickets will be phased to a 45% discount in Season 2025/26, to a 40% discount in Season 2026/27, to a 35% discount in Season 2027/28, a 30% discount in Season 2028/29 and a 25% discount in 2029/30, bringing it in line with matchday Senior concessions and Young Adults. Junior concession Season Tickets will remain at 50%.
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Seems fair enough to me, Season Ticket oldies have a few years to get used to it, and eventually it falls in line with young adult season tickets and senior matchday concessions. I understand some oldies are poor, but also some oldies are super rich and rode the crest of the housing boom in the 80s. Remember also that loads of people take the tinkle and use their dad or grandad's season ticket for themselves.
I don't go because ((drum roll please)) it is rather expensive. Deal with it. This is not your right, it is a choice.