Here in the UK, you see them in people's gardens sometimes:

https://www.google.com/maps/@55.9164681,-3.1675508,3a,15y,27...

Well it looks like you can buy them https://www.ebay.co.uk/itm/403689859315

It’s worth noting a K6 weighs in at about 1,250kg so “collect in person” is easier said than done!

Personally I’d go with a specialist/approved company such as x2connect.

I didn't know x2connect existed, neat.