The obvious question is "are those prices what's required to catch up to GS level X, or are they what's required to buy the Xth catchup that you buy?".
They answer this in the body of their announcement:
“ Note that this cost is not strictly the first 10 Reward Levels; rather it is the cost for unlocking any 10 Reward Levels through Catch-Up, regardless of which Reward Levels those are.”
Galactic Seasons - Credit Catch Up
in General Discussion
Posted · Edited by MadMidnite
They answer this in the body of their announcement:
“ Note that this cost is not strictly the first 10 Reward Levels; rather it is the cost for unlocking any 10 Reward Levels through Catch-Up, regardless of which Reward Levels those are.”