I have a wheelchair for my little guy. I made my first one out of pvc pipe and caster wheels. I his wheelchair I have now is made by Eddie's wheels.
Question is what does she need the cart/wheelchair for?? back legs, front legs. When it comes to buying a second hand wheelchairs you have to remember that all carts are specially fitted to the dog they were made for. But sometimes you can buy second hand carts at
Handicapped Pets - Elderly, Disabled, Injured, and Special Needs Pets these guys have a wanted ADs and forsale ADs.
If I can answer any questions please write me and I will help you as much as possible.