AD Is far from ?free?. I was able to get him f2p only because I got super lucky and was able to sell my 84 master kawhi (when the auction house was messed up) and I pulled a total of 3 halloween elites out of the rep packs which helped me complete sperwell. When been wallace became available I was already tired of grinding this promo that I just sniped the five room 3 elites for 60k and resold wallace for 250k. In total It only cost me like 100k to complete AD, but If my 84 kawhi would had never sold in the beginning then I would still be out there struggling to get AD. Not to mention that the 1 week vacation I got from work also helped me no life the game a bit lmao. Overall, if you dont have the time or a good amount of coins saved up then getting 87 AD is a struggle.