Made test-order to shapeways too. (estimated arrival here by end of month )

(Their online quote does not give any volume discount)

For polished ones, they have also low count of colors compared to sculpteo. (see below)

I will check out also frosted plastics (it is the only material they print down to my current wall thickness) frosted ultra detail is what they print to my original thickness requirement of 0.3mm - but that costs about 50€...