The phrase "additional costs may" is correct and usable in written English.
It can be used when discussing potential extra expenses that could arise in a situation or agreement.
Example: "Please be aware that additional costs may apply if the project scope changes."
Alternatives: "extra charges might" or "further expenses could".
And, if they do act, additional costs may be offset by increased bargaining power with managers.
If students wish to occupy rooms later than these dates, they must make prior arrangements with Housing & Residential Services and additional costs may be incurred.
There are no records for about 9,000 lead and galvanized services, the report estimated, and "additional costs may be incurred if all galvanized services are to be replaced".
Quite often, such an estimated PDF leads to an incorrect prediction of the produced energy so that additional costs may occur (e.g. see Tye et al. 2014).
About ¥1.20 trillion shall finance public-works projects, including re-building roads, ports and farmland (additional costs may involve the energy grid, telecommunication lines, mobile base stations, canals/irrigation, sewer and water pipes).
These additional costs may have negated the 1.2 % savings realized.
Out-of-state schools tend to be much more expensive, but the additional cost may be worth it if the school is the right fit.
Web sites often assume that you are a resident of that country when you book online, so the additional cost may not appear until you pick up the car.
If and when a visit for healthcare entails the need for pharmacy, that additional cost may make the visit prohibitive.
Intuitively, equivalence comes at a cost for the regulators and that additional cost may be high enough to make a certain degree of disequivalence acceptable (see pp. 485 486).
The ready availability of this parameter at no additional cost may encourage its wider use in clinical practice in the future.
