I bought a new whites coinmaster 6 detector.years ago .It stoped working and I sent it to whites for repair. Was told a$54.00 charge to check it plus any parts needed, Total charge will not be over $150.00. The newer models may be better and I have a bounty hunter 505 . Do not like the false signals. Checked whites coinmaster it also had false signal. Have used both detectors and can find more with my old coinmaster 4.Kenneth Smith