Overpricing

Help I think the dealer is overpricing me. I have a 2008 Hilux 2.7 with 39774km on the odometer. The vehicle went on 21 April 2015 for its 70 000km service. Two days later I was struggling to get the vehicle into gear. I immediately took the vehicle back to the dealership. Now they say the clutch needs to be replaced and they quoted me the following: <br> Replace clutch kit R2112<br> Lab skim flyweel R792<br> Disc assy cl R3135<br> Cover assy R1632<br> Bearing assy R830<br> Bearing, radi R64R<br> Seal, oil R430<br> Gear oil 75w R185<br> Labour R2904<br> Am I overreacting or are they loading the prices after not servicing my vehicle correctly the first time.