Sorry about the x-post but didn't know where to ask the question.

I guess I've been living under a rock. I wanted to update the VFR GPS in
the panel to an IFR model. I started getting quotes on recon GNC 300XLs.
The units themselves were about 2,500-3,000. I was shocked to find out that
I had to install an annunciator, a new indicator and approx 30 hrs labor
bringing the total cost to around 8,000. I checked several shops and got
the same story. Is it typical to spend 25% of the value of the aircraft on
just the IFR GPS? If I installed a 530, the receiver and install would
probably cost close to 80% of the value of the aircraft.

Eddie