Just got a used pair for $100
The thing is, I seem to have the DT880 Premium with 250 ohm impedance (quick multimeter test). I've found it on Beyer's website listed as the DT880 HZ which basically has the look of the Premium 600 ohm, but just the different impedance. Drivers are well burned in, but my ears aren't, so right now they sound a little tinny. Considering I've come from heavy-bass land, they sound pretty good for a first try with vocals and most instruments. Kicks on drums and bassier strings like cellos etc sound a bit distant, but like I said, I used to crank those 10-20hz bands like crazy.
Overall, I'm pretty happy with the purchase since they were well kept in a smoke-free environment (my last used pair were AKG K702s that lived 3ish years in a smoker's home, but still a great buy and cleaned up well)