The phrase "a valuable case" is correct and usable in written English.
It can be used when referring to a situation, example, or instance that holds significant importance or worth in a particular context.
Example: "The research presented a valuable case for the effectiveness of the new treatment in clinical trials."
Alternatives: "an important example" or "a significant instance."
As proof of corporate insanity it is a valuable case study.
The park's transformation, briefly chronicled here, is remarkable, a valuable case history in the power of public-private partnerships.
Adam Gadahn's transformation into Azzam al-Amriki may turn out to be a valuable case study in this effort.
Few previous studies have documented linear dunes in ancient successions; these findings represent a valuable case example.
The critical review therefore presents a valuable case study of the environmental performance of uranium mine site rehabilitation.
Critics have also not been kind: The Guardian's Jordan Hoffman labelled United Passions cinematic "excrement", adding: "As proof of corporate insanity it is a valuable case study".
In this context, the Northern Adriatic Sea (Mediterranean Sea) represents a valuable case-study due to the richness of both qualitative and quantitative historical sources on a large number of fish species, which allow performing the intercalibration between different kinds of information on fish communities.
"Its a very valuable case," he said.
In conclusion, we have attempted in earlier reviews as well as here to demonstrate that the PISA results for Ireland in 2009 represent a potentially valuable case study for other countries seeking to interpret unexpected changes in achievement in PISA or other international assessments over time.
The intervening period in which the transformation reshaped Maya cities and states, which is misnamed the classic Maya collapse, is a potentially very valuable case study into the dynamics of Maya urbanism and kingship.
Section 4 gives a special and valuable case for the moving BS situation.
