Are interim managers worth their money?

Day rates between 1100 € and € 2000 and this "full-time"-over several months-many financial managers stand on their foreheads!

From their perspective, this may also be understandable. However, the use of interim managers is often essential because demographic change has already fully used in most companies.
Experts for specific specialist areas - with leadership experience, empathetic, highly communicative and fully flexible for the geographical area of ​​application - the wish list reads for the future of their own company.
Unfortunately, this target image is more and more similar to a non -realistic ideal that can hardly be found on the free labor market.
From our experience, too, more and more experts with relevant skills want to use them only temporarily in jobs (temporary mandates) with maximum energy and to have the time and freedom back to regenerate again after a mandate.
In addition, the "Total Cost of Ownership" is also required for such business cases:
immediate availability and therefore no loss due to understaffing, no non-wage costs, no premiums, no fairies for personnel hunter, no termination costs, use "on demand" and much more are important aspects for the decision "search for permanent occupation" vs. "interim management".

Have you already had experience with interim managers?
We look forward to every statement.