The phrase "are costly to implement" is correct and usable in written English.
You can use it when discussing the financial implications or expenses associated with putting a plan, project, or system into action.
Example: "While the new software offers many benefits, the features we want are costly to implement."
Alternatives: "require significant investment" or "entail high costs."
He said public services needed a strategy to avoid mass redundancies, which are costly to implement once compensation is taken into account.
Our first hypothesis states that performance-based contracts are costly to implement and will emerge as optimal only when agency conflicts are severe.
While the best VMs use Just-In-Time (JIT) compilers to achieve good performance, JITs are costly to implement, and few VMs therefore come with one.
Contrary to popular belief that more disclosure rules impose regulatory burdens on firms and are costly to implement, we find that the stock market reacted positively toward rules that require more disclosure; whereas it reacted negatively toward rules that require less disclosure, even though those disclosure rules were initially designed to reduce the costs of compliance.
Thus, centralized schemes are costly to implement and susceptible to single-point failures.
These strategies not only are costly to implement but also may introduce other forms of inequality while trying to reduce age-related inequality.
Common ASR recharge methods utilize large-diameter injection wells or surface infiltration basins and trenches, and can be costly to implement.
They said that it was costly to implement and gave unfair advantage to overseas competitors to which it did not apply.
Many analysts say the critical factor in defeating Proposition 6 was Ronald Reagan, then the former governor, who said it would be costly to implement and infringed "on the basic rights of privacy".
"The boom delayed other policies that were costly to implement: judicial reforms, tax reforms, education reforms, labor market reforms, opening up to foreign trade," said Alejandro Werner, who heads the Western Hemisphere department at the I.M.F.
To the extent that socially responsible proposals can be costly to implement and that politicians pressure funds to favor local companies, this argument suggests that public pension funds would strongly support socially responsible proposals and be less willing to vote against the management of local firms.
