Try Vcool(Salwa Rd)
sedan would be around qr1800
4wd and minivans would be around qr2100
or Auto Magic(Airport Rd)
sedan qr 1500
or titainum(Salwa Rd)
or protection (Al Sadd)..etc these are all professionals.
or if ur looking for more cheaper ones then go to crazy signal, will get it for around qr70-100.