Credits for later in the game

[DeathsGift66]

In the late game the credit option becomes less appealing. Spend $90 a month and get 20 credits. 

• $600M is about 10-15 days in game revenue for whales not very appealing

I would suggest that the $90 a month comes with a 15% city, project, infra and land cost reduction that stacks with other effects. 

I feel like this would boost the chances of larger whales purchasing credits and Between the $150M off of a city and the $600M + the build savings it may entice more whales without being game breaking.

[Sir Scarfalot]

The credit option is weak because this game is not supposed to be pay-to-win. I for one like games that make sure the deep pockets don't have a competitive advantage over regular people.