My brothers electric wheelchair

My big brother Mark has Muscular Dystrophy. He has been independent for a while now but due to recent health issues and multiple hospital stays it is finally time to purchase an electric wheelchair so he can continue working and live an easier every day life. Insurance covered a great deal of the cost but not all of it. He is spending most of his own money on medical bills and in-home therapy and could really use some help. Thank you in advance for anything you can contribute. Every little bit helps!