Atm I just returned to the game, so i have not made a comp team yet, but i have made 8.4mill in 3 days, between gym rebattles, shiny hunting, and ditto box farming. to make a fully comp 5x31 team using a breeding service costs 6.6 mill. so in 3 days ive paid for 1.25 competitive teams. Ive found 1 shiny, which i sold for 5mill, made about 400k a day off rebattles, and 800k ish off ditto boxes a day. Even if you do rebattles and 4 ditto boxes a day which is only a few hours of time investment, (not very much considering most mmo players are no lifers who sit on their game 8+ hours a day), you can easily make 1 comp mon a day.