Ian-- I share your love for roller blind shutters, but they're severely limited in comparison to modern leaf shutters and there's a big price difference between barreled and (leaf) shuttered lenses. Throwing in a good condition roller blind shutter might add another $50-80 to a lens sale. There's a stronger demand for barrel lenses that cover 8x10 and larger formats and soft focus lenses, but a short Heliar in a barrel is more difficult to use--and the value reflects that.
Voit--enjoy your camera. Did you get any film holders? I think it's kind of funny that the camera was listed as a "Sanderson & Hutter"--obviously transmuted from the Sanderson Shutter label. I wonder if Sanderson made roller blind shutters or they just re-badged the ubiquitous Thornton-Pickard shutters.