The term "Goods and Services (G&S)" refers to items included in a market basket used for comparing costs in both the home and host countries.
The Goods & Services (G&S) Index is a factor determined by the following formula: Costs Abroad / Costs in the Home Country = Index
An assignment from a low cost country to a high cost country will typically result in an index of 100 or above; as assignment from a high cost country to a lower cost country would result in an index of 99 or below.