Adding a cost to cars in DarkRP

How do I add a cost to cars in DarkRP? Also, can people can’t spawn their custom cars, right?

You mean like Jeeps and Airboats in F4?

Find Addshipments.lua

And put in - AddCustomVehicle(“NAME OF VEHICLE”, PRICE)
AddCustomVehicle(“Airboat (example)”, PRICE HERE, {TEAM_HERE})

i tried that. Didnt work for me