I was a user on one of their pro plans with some discount. I remember getting confused between the two tokens limits (flow action and the other one). I am puzzled now trying to figure out if the change corresponds to effective decrease or increase of the pricing. They eliminated the flow action now. To be honest I think it might be that I couldn't understand the change.
The only thing I notice is that for 250 additional credit you pay $10 and at this point itis cheaper and better to get another subscription for $15 which will give you another 500 instead of $20. That is if you think you will need this number.