grailworth's fair market value: what a copy at each grade is worth today, from this issue's market
and how value moves with grade across every comic we track. Bold: our firmest values. *Rough: a looser estimate.
+$: worth grading, a raw copy at that grade gains this much slabbed by CGC, after the fee and shipping.
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T.H.U.N.D.E.R. Agents #18 (1965) is issue #18 of Tower's T.H.U.N.D.E.R. Agents (1965–1969), with a cover date of September 1968. Written by Dan Adkins and Ralph Reese and drawn by Dan Adkins, Reed Crandall, Steve Ditko and others.