DiscoveryOpt 7075 Aluminium Scope Rings 34mm High, and Low

Selling 2 sets of DiscoveryOpt rings.  34mm diameter 1x High (1.45"), and 1x Low (0.97").  Bought too many 34mm rings and now I need to recoup some cash for 30mm rings.  $52 each, willing to ship at buyers expense.  Willing to trade a set for a set of 7075 DiscoveryOpt 30mm medium rings or similar.