Just updating a comment I made a couple seasons ago to help track this:
What it looked like the past few years in 111:
2012: 399
2013: 228 (when things rolled back to year 1 pricing)
2014: 228
2015: 228
2016: 323 (the 42% increase)
2017: 380 -- 361 for season + 19 for CCL (subsequently refunded due to CCL format change) <-- Let's call this 20 games for consistency
2018: 430 for 20 games
2019: 462 for 20 games
2020: 510 for 20 games
I don't have older emails for previous prices but I know they were less than 399 as that was the peak after consistent annual increases.