User blog comment:RomGuyony/Cost Prediction of v4.3.1/@comment-142.16.22.18-20160521154124

Here's my experience.

When I started playing RR3 I don't recall there being any gold for ads. Levelling up rewarded me 3 Gold from level 1 to around level 160. So that's a total of 480 gold for all that racing!

Today I get 20 gold in ads per day and leveling up to level 160 would have yielded 4002 gold!!