ALMOST HAVE 1 COMPLETE SET

I AM PUTTING SOME SERIOUS TIME AND EFFORT PURCHASING INCOMPLETE SETS OF THESE BEAUTIFUL MERCURY OR 'WINGED LIBERTY HEAD' DIMES. I AM SHOOTING FOR 3 OR 4 COMPLETE SETS, AND OTHER THAN A FEW REALLY NICE SPECIMENS TO BE SENT TO NGC FOR GRADING, THE REST OF THE EXTRA'S WILL BE SOLD OR TRADED. TOWARD THE END OF MY JOURNEY OF OBTAINING COMPLETE SETS, I KNOW I WILL HAVE TO BREAK OUT THE WALLET AND INVEST SOME SEMI-SERIOUS MONEY FOR THE 1916D'S. PROBABLY WILL HAVE TO PAY $500.00 EACH FOR EVEN SEMI-DECENT ONES. THE 1921 & 1921D'S WILL BE KINDA SPENDY, BUT I SHOULD BE ABLE TO FIND SOME GOOD ONES FOR $25.00 TO $45.00 EACH.