1k gp... from 0 mods to 5* level 15 mods...
As others have said not worth it at all...
People imo are putting waaaaay to much focus on having large useless army of toons for the deployments, besides stars on lightside for platoons people should be focusing on 5 teams and multi configurations to defeat the battles.
Deployments is just some butter thrown on top, a near complete g10 toon I have is worth 30k. From Warriors video he got 280k (PLUS the deployment value of toons 30+k ea) for defeating 5/6 in a battle.
Though as someone mentioned above either it will count GP as you deploy, so you can swap mods, or it will count current/live status making swapping mods pointless for GP in deployments. Either way you are talking about small amounts of swing.
So imo those with the crazy "upgrade" plans is fun to talk about etc but in reality probably not nearly worth the effort. Sure throw some of that g1-6 that you have 1000s of, but make sure you have starred up your lightside first.