For the Special Weapon ability it can cost 10CP or so for a sword.
With a wealth roll you could buy one and use it. How does it roll when a character wants to just buy a weapon. There are many martial arts stores to buy weapons from etc, and guns as well.
As a GM would you preclude players buying kit and force them to invent it as CP used?
GC
"Wealth may never be used to purchase gear that will be used
more than once by the character's superhero identity (Special
Weapons, Vehicles, Bases, etc.) - it may only be used to pay for
incidental expendable purchases, or for items to be possessed
solely by the character’s pedestrian identity." (MP p. 147)
-Jeff