There are none in shops or trades, and the hover-over for the image doesn't show an average price. All I know is that it sells for 3750 crystals in the Fragmentiser Crystal Shop. Does anyone have any idea how much this thing is/should be worth?

It would be easy to buy the crystals from shops for 10k or less. So, it should be under 37.5m. Fragging it could be valued at 5k a crystal...19m. In between that makes the most sense, probably more than 19m just because of the time factor involved in fragging.