Not surprised your getting high quotes. It looks like a simple part on face value but start to think of how to machine it and your looking at working on up to 3 different orientations, 2 of which would require a a double sided jig to ensure the bearing recesses are aligned to a high tolerance.

My advice would be to redesign the part otherwise you'll either pay a lot or I can't imagine anyone on here taking it on for peanuts.