Forever is currently the longest time unit known to Cryptic science however scientists continue to look into when it actually ends. For the next three weeks at 33% less than normal your new LTS will keep you subbed until this time.
https://www.arcgames.com/en/games/champions-online/news/detail/9491983
I bought my LTS when it was full price about six months after COX shut down. I don't regret spending the money.
No regrets here. Got it for sale during F2P conversion.
1 more week and it looks like I'm gonna miss this sale again. : / Maybe next year..