First, lets make sure we are not getting the various machines Star produced confused. Star made both Reloaders and Sizer Lubricators. The former for reloading metallic cartridges, and the later for sizing lead bullets to the correct diameter.
Magma Engineering bought the rights to manufacture the Sizer Lubricator, and they produce a machine that is essentially identical to the machine manufactured by Star. In fact, I have used Magma Engineering parts to repair old Stars. As you said, Magma sells their machine for $195 without dies or bullet punches. The last time I checked, they sell dies for about $35 and bullet punches for $12.50. The typical price on Ebay for a Star Lubricator Sizer with one die and one punch is about $175. If you look around you may be able to find one at a gun show for $100, but they get snapped up very quickly. Star/Magma Lubrisizers are still the best machines out there.
The Star Reloader was acutally selling for about $1000 by the time Star went out of business. Prices for reloaders vary considerable depending on condition, caliber, and included accessories. I'd say that a Star Universal in 45 ACP, in good condition and with a Hulme Case Feeder should bring upwards of $600.