I've mentioned in other comments the difference between "hospital" style wheelchairs and full time use wheelchairs used by people with spinal cord injuries or other mobility issues. Full time wheelchairs are 1/3 or more lighter than the hospital style, more rigid which makes pushing more efficient, more comfortable, and easier to maneuver.
You cannot compare these wheelchairs to what you might sit in at the emergency room, as they are for different use cases and fill different needs. These wheelchairs aren't for "oh I broke my leg and have to use a wheelcahir for a few months". These are for "I will be spending 14+ hours a day in this chair."
Please do some research about rigid frame wheelchairs before saying you don't see how this is a big deal. Companies like TiLite and Quickie START at almost double this price point for similar products.
Amazing that a group of people who are generally the type to be sitting on $3000 ergonomic office chairs are insisting that $50 wheelchairs ought to be enough for anyone.