Buying a Attitude Indicator (artificial horizon), a Heading Indicator (Directional Gyro), turn and bank or turn coordinator from CESSNA would be like going to your car dealer to purchase a replacement headlight or an oil filter..... expect to get taken. Take a look in Trade-A-Plane, there are zillions of instrument shops and lots of good ones where you can get yours overhauled (cheapest generally) or exchange (usually a little more expensive, but not always) or buy a brand new unit outright.
Charles
