The phrase "a time when cost" is correct and usable in written English.
It can be used when discussing a specific period or situation where expenses or pricing are relevant to the context.
Example: "We need to reflect on a time when cost was a major concern for our project budget."
Alternatives: "a period when expenses" or "an instance when pricing".
Because Cisco recently won business from China Telecom and Global Crossing, Mr. Stix said, and is expected to get more at a time when cost cuts may improve profit margins, it is now "timely to buy".
"These budget cuts come at a time when cost pressures on schools from pensions and national insurance are also increasing.
It will also offer Mars synergy opportunities at a time when cost control becomes increasingly important because of rising ingredient costs.
Moreover, at a time when cost control dominates the health policy agenda, it is more urgent than ever to support consumers become a force for improving the quality of healthcare [ 29].
The impact on Avis has been lower rental rates at a time when costs have continued to rise.
How in the world can Washington pass a bill that raises health costs at a time when costs are already going through the roof?
At a time when costs are mounting for charities while returns on investments diminish, this charity finance special looks at how charities are managing rising costs.
This is in accordance with rules set at a time when costs connected to refugees were negligible, but doing it at scale is unwise.
"Consider it the concierge program souped up," Mr. Vinh said, adding that it would provide "huge value for our guests" at a time when costs are still a concern for many travelers.
Aetna and a number of other health insurance companies face dozens of lawsuits challenging fundamental managed care policies at a time when costs are generally rising as many patients insist on expensive drugs and procedures.
At a time when cost-efficiency rules, this capital outlay can no longer be justified.
