CCIP-085 - Drop base pricing for both events and banners by 50%

Last Moon Week the community voted to increase event pricing by 300%, and institute dynamic pricing for banners based on demand. Both were reasonable proposals based on pricing and demand at that time, unfortunately everybody was voting based on inaccurate data. After voting was complete a bug in the calculator was discovered that was keeping base pricing low, and once fixed base pricing for both events and banners increased by ~100%.

Rather than run an emergency governance poll or switch back to pricing in line with the polls the community voted on, the pricing was left where it was. As a result we have had only one AMA booking since, which is a large drop off in activity compared to before when pricing was lower. You can view burns for events and banners here:

https://nova.arbiscan.io/token/0x0057ac2d777797d31cd3f8f13bf5e927571d6ad0?a=0x000000000000000000000000000000000000dead

I propose we retain the original algorithm set in CCIP-043 along with CCIP-082 for banners, but drop the base price by 50%. Similarly I propose that we drop the base price for events by 50%.

I would also like to include in this proposal that if in the future there are further bugs discovered in the calculator that the price should reflect what the community most recently voted for, and not an arbitrary number that was arrived at through error.

Current pricing

Events: 3,150 Moons

Banner: 7,896 Moons

Pricing if this proposal passed

Events: 1,575 Moons

Banner: 3,948 Moons