Well I've only done a quick search so far but it's looking like they might only be available in the states. There is an American toy seller that has them in stock, don't know if I am able to advertise them on here so I will pm you. Van Statten might be able to tell us more about them?
In the past couple of years I've seen then used for Star Wars figures on various sites. I do like the way the backdrops are set in. I have a whole bunch of Indy figures that I could easily display on something like this unit. Till then, they can live in the bag they're in now.