In the region of
Definition 1 of 1
Pro Tip 1/3Estimate Range
Used when the exact number is unknown but you have a reasonable guess. 
I've been living here for in the region of ten years.
Pro Tip 2/3Non-scientific
Suitable for everyday speech or writing, but not for precise or scientific contexts. 
His collection has in the region of a hundred stamps.
Pro Tip 3/3Finance Commonality
Frequently used in financial contexts to discuss costs, prices or budgets. 
Our budget is in the region of $2,000 for this project.