The phrase "avoid great costs" is correct and usable in written English.
You can use it when discussing strategies or actions aimed at minimizing expenses or financial burdens.
Example: "To ensure the project's success, we must find ways to avoid great costs while maintaining quality."
Alternatives: "minimize significant expenses" or "reduce high costs".
Emissions must be cut significantly worldwide soon by major polluters to avoid greater climate costs and risks.
The world must overcome its torpor to avoid the greater cost of an inevitable later intervention, and I was heartened by the efforts of George Clooney and his colleagues to bring the matter to public attention in Washington last week.
For the utilitarian may simply hold that the best explanation for the rationality of a given person incurring some cost for herself in order to avoid some greater cost for herself is the unrestricted rationality of minimizing net costs (or maximizing net benefits).
They can be avoided only at great cost, and in many cases not at all.
Even if economic catastrophe is avoided, the financial crisis will impose great costs on consumers, workers and businesses.
And as many enterprises, who want to avoid even greater operating costs, rely on Bring Your Own Device (BYOD), the risks grows exponentially because there is no longer any modicum of management of the smartphones brought into the business space, or used to reach employees who are available in off hours or off campus.
Lenders have often agreed to such steps in the past because it was in everyone's interest to avoid foreclosure costs and possibly greater losses.
A good climate bill will help consumers avoid these costs by shifting to greater energy efficiency and clean energy technologies.
[Daily Mail - © 2013 Daily Mail] "I think this voucher is a great investment to avoid future healthcare costs".
If necessary, Egypt could go it alone, but only at a great cost that it has every incentive to avoid.
