We will bring those CPM's down to normal or better levels all because Facebook rewards their favourite advertisers, the more your audience/customers are engaged and enjoy your product the better Facebook deems your ads. It's a Win Win!
Laser Targeted Audience
With feedback score above 4 all this reverses, Facebook will reward your ad spend with laser like targeted traffic who pend more, return to the store and convert easier. Al while reducing ad costs, it's a game changer.