The Collaborative International Dictionary of English v.0.48:

Unprocurable \Unprocurable\
   See procurable.

WordNet (r) 3.0 (2006):

unprocurable
    adj 1: not capable of being obtained; "a rare work, today almost
           inaccessible"; "timber is virtually unobtainable in the
           islands"; "untouchable resources buried deep within the
           earth" [syn: inaccessible, unobtainable,
           unprocurable, untouchable]