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Starbonds prices are adjusted according to 'TAG' (Glossary)
TAG = the average box office of the starbonds last 5 movies that were released (with a limit of $250 per movie and movies that do not report box office are removed from their list and they do not adjust).
(Movie1 + Movie2 + Movie3 + Movie4 + Movie5) divided by 5
if less than 5 movies released=
4 Movies (Movies 1-4) / 4
2 or 3 Movies (Movies 1-2-3) /3
1st movie released = does not adjust
So John Boyega would be
1) Force Awakens $250 (limit)
2) The Circle $20.47
3) Detroit $16.78
4) The Last Jedi $250 (limit)
5) Pacific Rim 2 $57.50
======================
250 + 20.47 + 16.78 + 250 + 57.50 = 594.75
594.75 divided by 5 = $118.95 (New TAG... Adjust Price)
The art of investing in starbonds is to estimate the final box office for their current movie and then estimate what their new TAG might be versus their current trading price.
see here to check your answers (link)