The local organ guild has one. I took my kids to an event to assemble it. Lots of fun but it is a better one time assemble event not a have and play thing. The local guild has one because they are a bunch of "old people" who noticed there are no young kids getting into their hobby/job and so they found something fun that they hope interests kids in the pipe organ. I hope it works out - the organ is really neat and this is fun for kids to assemble.

The organ itself is a design from the Netherlands. The link you live has some sort of rights to the design in the US, but if you live elsewhere I'm not sure what the legal terms are - likely you can find a different answer.

For those in the US, https://www.agohq.org/ is the place to go to find your local chapter.