Keep in mind that a condition inspection is not a preventative maintenance interval event (though preventative maint. usually is competed at the same time).
This may sting a bit for some, but a
lot of people do preventative maint. condition inspections. That is a problem I see with the repairman's certificate policy (though I would not want anything to happen to the freedoms we currently have as home builders).
It is a simple fact, that building an airplane, in reality, provides very little training towards actually inspecting an aging aircraft.
Case in point... when we as a company issues a Service Bulletin or notification about a specific detail that should be inspected, there is often quite a few people that then mention that they detected the issue on their own aircraft. Did every one of those people have that issue only become detectable since the last condition inspection? Possible but not likely. More likely is that the detail had been missed. Maybe on multiple inspections.
It is actually rare, though it does happen occasionally, that someone detects a problem and notifies us, before we were aware of it, and then it ultimately becomes an S.B.
So back to the original question... the responses you get regarding times for completing a condition inspection may be meaningless without knowing details about how the inspection was performed.
Here at Van's, a condition inspection (we have to actually do 100 hr inspections because of our certification, but it is the exact same inspection regardless of interval), if done by a single person, typically takes about 2-3 days depending on the airplane model, and then approx. an additional day for any preventative maintenance, ground check, and return to service test flight. So call it 25 - 30 hrs. I think you would find this to be pretty typical if you took it to a shop where a professional was doing the work to the level that it should be.
For anyone that might be interested, you can access a power point presentation that I have given numerous times over the years, on how to properly complete a condition inspection.
https://www.vansaircraft.com/wp-content/uploads/2019/02/Whats_Your_Condition_Inspection.pdf
I think Vic has a good presentation that can possibly be found on line as well.