The Amazon results in the US are basically the same. You can buy chairs for $200 in the same way you can buy a bike from Walmart for $200. $200 chairs aren't suitable for day-to-day mobility, especially outside. This article I found in another comment explains the difference:

https://www.sammcintosh.com/blog/wheelchairtypes0620

Hospital chairs and everyday chairs are both technically wheelchairs, but they are totally different products for different purposes.