I am original owner. Excellent condition and -- from my own experience -- works easily and well. There is a little learning curve, but once you've got the knack, precise focus point is dead-nuts every time. Easy to re-check focus during the shoot, unlike microscope systems. Package deal including both devices, Nikon adaptor and original instruction sheets.
New from Spectra was 135 + 79 = 214 plus shipping. I want $140.00 plus shipping.