Massdrop offers its Massdrop x Fostex T-X0 Planar Magnetic Headphones for $149.99 with free shipping. That's $50 off list and the lowest price we could find. (For further comparison, it's also $10 less than what most stores charge for an unmodified T50RP MK3 Headphones.)
Based on the venerable (and discontinued) Fostex T50RP MKII, these limited edition headphones feature a black/brown colorway and many popular modifications, including a leather headband strap, perforated protein leather and velour earpads, and Fostex-tuned acoustic damping and filters. Deal ends June 29.
Note: They're expected to ship on October 10.