Considering the costs of a full restoration i think 225 000 is still not expensive.
Not much GTA's with all the proper parts left. I think 300 000 $ is good guideline for a car with all the proper parts.
Hard to proof race history though.
Restoring a car is very costly.
Fred I concur restoration costs are always way more than you estimate. Plus the correct parts are getting harder and harder to find.
I spent over a year and many hundreds of hours documenting the race history on my GTA. The SCCA Archivist Pete Hylton helped plus reading lots of old AW (competition Press) want ads plus interviewing all past owners.
It is tedious work but worth the effort.