Warning! Guardian Games additional bounties actually cost more than the cost showing in the companion app
Heads up! The companion app is showing the cost of additional Guardian Games bounties as 100 glimmer, both when viewing all of the bounties in the vendor screen and again when purchasing the bounties, but it is actually charging your account 3000 glimmer. I've been buying all of mine via the app while in orbit not realizing it was draining my balance.