Key Collector describes an acquisition guide based on up to ten ungraded secondary-market transactions in a month, with an approximate 10–15% reduction. Its public issue pages do not disclose each book’s underlying sale dates, sample size or most recent valuation update. “Checked” means when the displayed figures were inspected, not when every underlying sale occurred.
The original USD figures are retained in the evidence appendix. GBP = USD ÷ 1.3265, rounded to the nearest pound, using the Bank of England’s displayed spot reference for 23 September 2026. Currency conversion does not establish a UK market price. Small rounded figures can be below ordinary shop prices; they do not mean a copy is available at that price.
Low, Mid and High are broad raw condition categories. They are not grades 2.0, 6.0 and 9.8, and the High figure is not a pristine-copy ceiling. Certified sales, scarce variants, incomplete copies and restored copies need separate comparisons. Shipping, import costs, purchase fees and eventual selling costs are additional.
Use these numbers to decide what to research next. Before paying, compare recent completed sales of the same issue, printing, price edition and comparable condition. Asking prices and unsold listings do not establish value. For a substantial purchase, examine clear photographs of the front, back, spine, staples and interior.
We have not established a matched ten-year raw sales series. A defensible uplift would require like-for-like editions and condition, comparable sale samples at both dates, and a clear treatment of fees and inflation. We therefore publish no ten-year percentage or promised return. These are collecting choices with resale risk, not guaranteed investments.
Moon Knight #1 (2021)USD $1 / $2 / $3. Edition priced: First-print Cover A, Steve McNiven cover. Buying check: Choose the standard first printing; numerous variants and later printings are separate purchases. Source.
Moon Knight #1 (2014)USD $1 / $2 / $10. Edition priced: Regular first printing, Declan Shalvey cover. Buying check: A white-suit design appeared earlier in Secret Avengers #19; distinguish design debut from named identity. Source.
Moon Knight #1 (2016)USD $1 / $3 / $12. Edition priced: First-print Cover A, Greg Smallwood cover. Buying check: This is the ordinary first-print cover, not the Marco Rudy incentive or another variant. Source.
Moon Knight #1 (1985)USD $1 / $3 / $12. Edition priced: Regular US first printing / direct-market entry. Buying check: A relaunch rather than Moon Knight’s first solo title; distinguish newsstand and Canadian editions. Source.
Marc Spector: Moon Knight #1 (1989)USD $1 / $5 / $18. Edition priced: Regular first printing, Carl Potts cover. Buying check: Confirm the 1989 series; the same title relaunched in 2026. Source.
Moon Knight #1 (1980)USD $5 / $15 / $50. Edition priced: Regular first printing / direct-market entry. Buying check: Not Moon Knight’s first appearance. Newsstand and facsimile pages have separate prices. Source.
Moon Knight #25 (1982)USD $8 / $20 / $80. Edition priced: Regular first printing, not the separate error-edition entry. Buying check: Assess this copy’s actual condition; an error edition is catalogued separately. Source.
Marvel Spotlight #28 (1976)USD $15 / $50 / $150. Edition priced: Regular US 25-cent first printing. Buying check: The 30-cent test-price variant and UK pence edition are different entries; do not mix their sales. Source.
Werewolf by Night #33 (1975)USD $20 / $80 / $200. Edition priced: Regular US first printing. Buying check: Check that it is the original, not a modern facsimile; inspect both covers and interior completeness. Source.
Werewolf by Night #32 (1975)USD $100 / $300 / $1000. Edition priced: Regular US first printing. Buying check: Require clear front, back, spine and interior evidence; completeness, restoration and edition can materially change the price. Source.