Fence around a yard

A 5 year old boy who has been diagnosed with Autism and is non verbal was adopted by his grandparents. Despite many efforts he keeps finding ways to get out of the home. For Safety purposes, the family would like to install a fence around the yard so that when he does get outside there is an enclosed area that he can remain in safely. The initial estimate for this fence was $10,000 which the family is not able to afford. We are looking for financial donations or if there is a company that would be willing to assist at a lower cost.