The first run is $1.95 each, undated covers. (May 1990 through September 1990)
These are listed in series:
http://www.xowcomics.com/series_issues.htm?series_id=16511 The Legend of Zelda (Acclaim / Valiant, 1990 Series)
A reprint run started nine months later. Each is $1.50, with months on the covers (February 1991 through June 1991). The second run reverses the covers used on issues 2 and 4.
These are listed in series:
http://www.xowcomics.com/series_issues.htm?series_id=39934 The Legend of Zelda (Acclaim / Valiant, 1990 Series)