I think I've gotten in over my head when it comes to Gunpla.

Solvent, rubber cement, sanding pads... what exactly do I need in order to make a Gunpla look good? My current set of tools are Gundam Markers that are too large to paint small areas properly, a fine-tip micron pen, tweezers, a hobby knife, nippers, a plastic file (which seems to destroy parts rather than file them) and screwdrivers which I used when building the extraordinarly unsturdy MS Display base.

What am I missing, and what will all the required stuff run me?