Photo link. "The grooviest buy of the year." Only $1 more than some Sea Monkeys. From the 1967 Monkee Spectacular magazine from Tiger Beat. Scanned and shared on Flickr by Facing West.
Related, and also from Facing West's excellent Flickr collection of vintage ad scans: "Everything You Always Wanted To Know About The Monkees, But Where Afraid To Ask," below.