I bought one very similar Barry a few months ago, (same design rebranded) at that price they are crap, with virtually no control on anything but really flat ground malls etc, at that price the joystick is a really cheap one with no finesse I sent it back for a refund.
A mobility scooter is the best thing I find, It has far more control & mine (
https://www.activemobility.co.uk/mo...Oey4gCnfeLD_54acDL4sU8UOlNtL6pghoCCgsQAvD_BwE) will go most places and even does a steepish hill, if it had rubber tyres instead of plastic ones it would do more but ground clearance kills it, a wheelchair is more for people who have more restricted mobility.
Simon, thinking laterally if you had a PVC, you can get a ramp to fit a larger scooter into the side loading door space or a swing out arm with a winch on it, you would lose a bit of kitchen space but it would work well I think.
Just chucking ideas out there.
I have a rope hoist, but there are 12v winches too with remotes.