I have not put any energy into finding one. I have tested only two A-bikes.
One real and one fake. Very big difference. Can not be compared.
Two totally different experiences.

Them only had the very small wheels when I tested some years ago.

I don't trust any dealer here in Sweden has imported them.
No demand to have them from bike riders. Folders are only for enthusiasts here.

Sure I can buy one from England but I am into Rollators or balance bikes
for very tall people. I am 1940 mm. And weight 100KG now so I don't
trust an A-bike last for so long.

But talking about carrying them in a bag. The metal parts but also the
plastic parts poke into the body if one have it on back. One need a lot
of padding foam that make it less poky.