Blessings and Condolences to your Family.

You may find IT difficult to find a buyer - even here. Most of us have issues with our own Suppliers and they are nearby. Besides, few are very familiar with any maintenance or repair issues which may arise.

Consider donating to a local charity which specializes in medical equipment. Maybe check with Seniors or Veterans associations too. Of course, you may be able to deduct the FMV of the device from your taxes. Even not, your family will be proud, someone in our crowd will benefit, and you can find a lighter door stop to catch a fresh breeze when the weather improves.
Thank you for thinking of those in this group and All the BEST to your Family.