Anything arbitrary, such as an arithmetical value or a fee.
Not representative or symbolic; not iconic.
Determined by independent arbiter.
Determined by impulse rather than reason; heavy-handed.
Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.
Any, out of all that are possible.
Just; fair; agreeable to reason.
Satisfactory.
Not excessive or immoderate; within due limits; proper.
Not expensive; fairly priced.