alt Hacker NewsCustomized to your dimensions wheelchair. Because people shopping for these are permanently disabled and are looking for long term comfort and performance. Performance meaning the chairs can actually be used to enjoy life instead of being a fragile "medical chair".
There are plenty of sub $200 wheelchairs on US Amazon.
Even then it shouldn't cost $1k. A customised wheelchair will still use the same wheels. Most likely the only customisation available may be for the width/height of the chair. Not a big deal of work at all.