The player shown in the above screenshot is a cheat. Even with a million dollars you can't buy 6 barracks (max allowed is 3), 5 catapults (max is 3), 2 castles (max is 1), 10 trees (max is 6), 8 towers (max is 5), 9 houses (max is 7). I'm a level 105 player and have been playing for 5 months...those structures are impossible!