You may be able to buy a unimat SL fixed steady on Ebay usa, but I haven't seen on for sale in Europe for the last 6 months.
I can tell you that the cost for 3D printing form Shapeways, a 3D printing company. would not be cheap I am guessing more than $100.
When I've proven my steady I'm going to post them here for all to use.
Les Orton