Delivery costs range from $6-$12 in capital cities. If you've thought about the Sennheiser HD600 or 650/6XX but were worried about positional cues for gaming/movies/music, look no further. Similar deals are also available from CameraPro and on pre-order from PC Case Gear.
Warm tilt up from neutral, with very closed back-esque bass while having a flat sound signature most of the way through, just a sometimes notable cut just before 3kHz. Where as the 6XX are magical with vocals, the R70X is a more robust all-rounder, that can bring studio and live recordings to life in a way you'd rarely get out of the 6XX, all with a magical treble range.
Acoustically, this headphone is a homage to the 600 and the 650 while retaining the imaging and female vocal strengths that Audio Technica are well regarded for. I feel like a lot of people would be happy with this headphone for a long time, and the design choices (dual stereo cables instead of L/R, weight of 210g) make for a headphone you can just sit back and enjoy.
Despite the high impedence, these have a good enough sensitivity that you can start off without an amp, and build your setup up for that. I'd imagine they'd pair well with a tube amp similar to the 600/650/6XX,as well.