If $100/year is too high for your company, you quite probably have more serious problems than the App Store. I don't distribute Mac apps through the app store,

If $100/year is too high for your company, you quite probably have more serious problems than the App Store. I don't distribute Mac apps through the app store, and signing a regular app (no need to worry about sandboxing) with your developer certificate so that it can run without disabling Gatekeeper literally involves clicking a single radio button in Xcode.