"affects cost" is correct and usable in written English.
You would typically use this phrase when talking about something that has a direct effect on the cost of something else. For example, "The increased demand for the product affects cost, resulting in a higher price."
Theoretically, the efficiency of aviation equipment is an important factor which affects cost.
Aggregate production operations include drilling, blasting, secondary crushing (if necessary), loading, hauling and crushing-screening, and each of these factors affects cost.
The results robustly indicate that at higher (lower) levels of usage for product planning purposes, cost system complexity negatively (positively) affects cost system intensity of use, while at higher (lower) levels of usage for cost management purposes, cost system complexity positively (negatively) affects cost system intensity of use and satisfaction.
A high efficiency rating also affects cost.
Finally, in the emergency area "Adjusted patients" is the variable that most affects cost.
In the outpatient area, we individuate only "Examination rooms" as the variable that significantly affects cost.
The first type of factors affects cost-effectiveness significantly, while the second type generates considerable effect on emission performance.
It's a choice that affects costs, ads and coverage, too.
Sensitivity analysis was conducted to investigate how programme variation affects costs and to identify potential cost savings in the future implementation of IST.
The objective of this study was to determine whether intraoperative conversion affects costs and quality of life.
His research during 12 years at RFF often related to global climate change and examined how the design of environmental policy affects costs and effectiveness.
