Funeral expenses for Braeden Chandler

This is my nephew, Braeden Chandler. He is the 12 year old son of my brother and sister-in-law, Paul and Francine Chandler, who passed away on November 16th. He has a twin brother, Christian.  Braeden was born with Cerebral Palsy and has undergone several surgeries in his short life, but that child always had a smile on his face and the most infectious laugh you ever heard.
This was so unexpected and we're asking for help in covering the funeral expenses.  I don't have any idea of how much it will cost, but they have no life insurance on him and had to buy a plot and cover everything else, so I just guessed.  Anything sure would be appreciated.
Thanks
Lynn Chandler Waits