Yes, that is ONE card at around 250 CP per DEC, but the others at around 35 CP per DEC.
This is quite the average CP/DEC or until 60 CP per DEC towards the end of season. So if you're planning to rent out your deck, expect the few days before the EoS to be the most profitable one. Hope this helps!
You are absolutely correct. New season, and it has gone back to "normal". I still remember the days of 500 or 1,000 CP per dec though. Ahhh... nostalga!
I think my plan is to play the first 5 to 8 days, rest for a day, and then rent for the last 4 or 5 days. It also stops me getting too additcted to the gameplay again. lol.