They have worked on several of my SLR and DSLR bodies. I've always been pleased with the service and I think they have given me very reasonable estimates.
I'd compare their quotes with an E+ body from KEH. They rate their equipment conservatively, charge a bit more than a private sale but offer a XX day return policy and warranty. It's been a while since I checked the return period, I've never needed it . But you can do due diligence at www.keh.com
Roger It's still, ISO, aperture and shutter-speed, right?