Put in buy orders for 4 sepwrate players. Put in enough orders to get the 50K exchange, for FOTF Albies, done 5 times.
That mainly gave me Albies, SP Wilson, so Bronze and Silver Braves, 2000 stubs, and 3 Team Affinty packs.
Total cost was 19,042. 17,042 if you count the 2K I got in the reward path.
That seems pretty [censored] cheap.
Sounds about right, depends on how you go about it. If you're buying golds and diamonds to complete it you're gonna burn a lot of stubs but if you stick with the 72 to 75 rated guys going for less than 100 stubs, you'll knock those out for cheap.