I own a car rental shop and am setting up a fee schedule for when customers bring back a vehicle with signs of damage. Some damage has a defined price ie. a rear view mirror. Some damage is conditional on how severe it is, such as a dent.
What is the best way of communicating the option to designate a variable fee versus a defined fee? A couple of options below:
Use hint text. Pricing remains variable, if value is not entered
Empty field. Validation message appears on mouse-out, if value not entered. Must use 0 for variable pricing.