I agree with ket. There have been about 10 copies up for auction over the last 2 years. They all went for ca. 600-700 USD. I believe that 0P127 was printed not as a one-off but in roughly the same numbers like the other latter-day promos. Maybe it rarer than other promos, because it was not properly distributed and a large part of the print run was destroyed by decipher when they lost the licence.