Marvel· 1988

Classic X-Men #21

Trap checkDon't buy these

19 listingson eBay right now look like this issue but aren't it — usually the cheapest ones on the page. Here's what's wrong with each, so you don't buy the wrong book.

Wrong volume$3.79
Marvel Comics Classic X-Men 21 May 1984 Vintage Nice Condition Comic Book
Same title and issue number, but a different relaunch. Daredevil #1 exists in six volumes — the 1964 key and the 2023 reboot are not the same book.
View
Lot / bundle$3.99
Classic X-Men #20 #21 Lot ~Marvel ~Alpha Flight Nice Grade VF- 7.5 (V36)
Multiple books sold together. The price is for the whole lot, so it is not comparable to a single copy.
View
Wrong volume$4.24
Classic X-Men (1986) #21 VF+ 8.5 Art Adams Cover
Same title and issue number, but a different relaunch. Daredevil #1 exists in six volumes — the 1964 key and the 2023 reboot are not the same book.
View
Wrong volume$6.99
X-Men Classic #21 - Marvel Comics - Classic X-Men - 1986 series
Same title and issue number, but a different relaunch. Daredevil #1 exists in six volumes — the 1964 key and the 2023 reboot are not the same book.
View
Wrong volume$10.98
Classic X-Men #21 (1986, Marvel) Brand New Warehouse Inventory VG/VF Condition
Same title and issue number, but a different relaunch. Daredevil #1 exists in six volumes — the 1964 key and the 2023 reboot are not the same book.
View
Lot / bundle$10.99
Lot Of 2 X-Men Classic Classic X-Men #21 #25 Marvel Comics 1988 MAY SEPT Vtg 80s
Multiple books sold together. The price is for the whole lot, so it is not comparable to a single copy.
View
Wrong printing$20.00
2005 THE BEAST X-MEN CLASSIC MARVEL 3.5” FIGURINE COLLECTION #16 EAGLEMOSS 1:21
A later printing of this issue. Printings are separate markets: a 1st print can be worth many times a 2nd print of the same book.
View
Lot / bundle$21.99
CLASSIC X-MEN 20 21 22 23 24 25 LOT ARTHUR ADAMS COVERS JOHN BOLTON 1988 VF/NM
Multiple books sold together. The price is for the whole lot, so it is not comparable to a single copy.
View

Should you buy that copy?

Looking at a specific listing? Paste its eBay link — we'll read the copy and tell you if it's the right book and how the price sits against real sales. No link? Paste the title instead.

Guide value · CGC 9.8

$90

Estimated current value from PriceCharting

—

An estimate of what this grade is worth today, not a record of any sale. Guide values are trailing aggregates, so they lag a fast-moving book — a copy that just sold at auction may have gone for well above or below this.

Where the copies sit

Only 1 copy on the market at this grade — nothing to compare it against.

Guide value

Updated	Grade	Estimate
Aug 29, 2026	CGC 9.8	$89.86

Seen these sell? Add the sales

Paste recent sold results — from eBay's completed listings, a price guide, or your own purchases. We auto-detect the grade and flag the wrong books; you confirm.

Find a copy to buy

None on eBay right now? These open a pre-filled search for this exact book across the places collectors hunt.

Gradesearching: Classic X-Men #21 1988 CGC 9.8