When they double the credit cost to level a character without increasing the rewards, it's goin go result in a bad economy. 1.1 mil to level 1-60 and another 1.3 mil from 60-70. It wouldn't surprise me if they increase it another 1.5 to go from 70-80. Unless they increase rewards a lot, this economy will be in serious shambles.
At least bump up the credit package when you reach 70. 525k base was fine at 60 when you could buy 2 to max out a token. Now you have to buy 4. If it was a 1 mil base payout at 70 it wouldn't be so bad.