Without knowing what the issues were and what was done, can't really say if the price is reasonable. Like, if there was debris inside the viewfinder and the card slots, then it's a different story than if it's just that the sensor has some dust on it. The revised fee is $35 more than the original quote. I think the difference sounds reasonable.
Just as a general principle: I don't have equipment serviced unless something is malfunctioning. I do routine cleaning myself, including sensors, lens front and rear elements, lens mount, AF contact points, exterior. The exception is if a camera or lens is going out of mfg service support. Like, the D3s. That went in for a final CLA and any needed repairs. The milestone was a shame. I'd buy another D3s if parts were available. Same story with the AFS/D long lenses. I don't need VR in a 400mm, but availability of replacement parts is different.
I had a 28-105 D lens and the aperture was not working right . I found a camera repair about an hour away. I got there and decided to leave my D7000 with him for cleaning as well. The estimate I got was as $80 to repair the lens and $130 to clean the camera. A week later, when I picked them up I was told the lens only needed cleaning but my bill rose from $210 to $245, plus tax. Is that about what everyone pays for a professional camera cleaning?