If you think she only did it for the money, you haven't even 'scratched the surface'. [=there are many other factors, reasons, etc., involved]
Despite the 'surface' differences between the two candidates, they are very similar in most ways.
The tension between them is beginning to 'rise to the surface'. [=it is becoming easy to see]
(..) Careful. You took quite a hit. Where is everyone? Patrolling the sun. Things are starting to get hot out there. The sensors are picking up a pressure zone under the surface. Won't be long now. So the Guardians are right. Krona is coming. SINESTRO: It seems. (..)2011 Green Lantern: Emerald Knights
(..) Just watch out for his left. Any news? There've been a couple more rifts, five Demons. Nothing major. We have all our sensors skimming the surface. Any sign of antimatter, they'll pick it up. So we still don't know when he's coming? LAIRA: To serve as a Green Lantern means facing the unknown. (..)2011 Green Lantern: Emerald Knights