I agree with Paul.
That is like asking how long is a 2x4. The cost will all depend on the amount of parts and labor. You may only need to replace the front pads and have the rotors turned or you may need complete brake assemblies if it is an older van and has not been serviced in quite some time ago. The only way to tell what condition your brakes are in is to visually inspect the existing condition of the brakes to determine the repair cost. Call for an appointment, there is a drop box for key if you leave your van after hours. Closed on weekends.
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