Wonder Boy in Monster World (Genesis) — Price Guide & Live Deals
Live Sega Genesis Wonder Boy in Monster World deals across loose, CIB and sealed copies, what asking prices look like, and which listings to skip.
Right now: Loose prices roughly flat over 90 days, 37 current qualifying listings.
Current qualifying listings
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Wonder Boy in Monster World (Sega Genesis, 1990) Original Box No Manual Tested
$26.99 USD
Shipping calculated
★ 100% · 237 ratings
Listed today · checked 8h ago
Wonder Boy in Monster World (Sega Genesis, 1990) Complete In Box CIB Tested
$54.99 USD
Shipping calculated
★ 100% · 1,526 ratings
Listed yesterday · checked yesterday
Wonder Boy in Monster World (Sega Genesis, 1990) Complete In Box
$99.99 USD
Free shipping
★ 100% · 499 ratings
Listed 5 days ago · checked 5 days ago
Wonder Boy in Monster World Sega Genesis 1990, W/ Case Tested Working
$54.90 USD
Shipping calculated
★ 100% · 2,857 ratings
Listed 6 days ago · checked 6 days ago
SEGA Wonder Boy in Monster World Sega Genesis Game Cartridge Only
$25.00 USD
★ 100% · 32 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder Boy in Monster World (Sega Genesis, 1990) Case Cartridge No Manual Tested
$35.00 USD
+$8.00 shipping
★ 98.2% · 434 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder boy In Monster World Sega Genesis Authentic
$23.74 USD
Shipping calculated
★ 99.3% · 512 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder Boy in Monster World (Sega Genesis, 1990) TESTED
$44.99 USD
Free shipping
★ 99.7% · 6,656 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder Boy in Monster World (Sega Genesis, 1991) Game Cart Only Authentic Tested
$33.99 USD
Free shipping
★ 100% · 1,459 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder Boy in Monster World Sega Genesis Game & Case - No Manual
$37.99 USD
Shipping calculated
★ 100% · 327 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder Boy in Monster World Sega Genesis Video Game Cartridge WITHOUT Manual
$55.95 USD
Shipping calculated
★ 100% · 2,463 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Wonder Boy in Monster World for Sega Genesis - No Manual, Tested
$47.99 USD
Free shipping
★ 99.9% · 11,115 ratings
Wonder Boy in Monster World Genesis · 10/28/2026 2:40 PM
Roughly one qualifying listing every 7.5 days.
Asking-price ranges by condition
| Condition | Min | 25% | Median | 75% | Max | N |
|---|---|---|---|---|---|---|
| Loose | $19.99 | $34.95 | $44.00 | $49.99 | $64.99 | 31 |
| Cib | $40.00 | $54.99 | $81.84 | $85.40 | $99.99 | 5 |
| SealedLow sample size | $1,499.99 | $1,499.99 | $1,499.99 | $1,499.99 | $1,499.99 | 1 |
Asking prices of currently-active listings. Not sold-price data. Rows marked "low sample size" have fewer than 5 listings, so one outlier can move them a lot.
Full asking-price history by condition →
Is this a good price?
Enter a price to see where it falls among current Loose asking prices for Wonder Boy in Monster World (Genesis).
How we filter
Every feed has its own filter, tuned by hand for this one game. Before any change goes live, those filters are tested against thousands of real eBay listing titles. Every night, each feed is checked against every other deal page in its category, so a listing for a different game that slips in gets flagged and fixed instead of quietly shown.
Of the 24 listings we observed for this game in the last 30 days, we filtered out 20 of 24 (~83%) for quality reasons. The remaining 4 are what we'd actually surface.
- 18 matched a bootleg / out-of-scope keyword
- 2 shipped from a region we exclude
What the feed excludes
An eBay search for Wonder Boy in Monster World (Genesis) returns far more than the game itself: controllers, T-shirts, strategy guides, imports and repro carts all mention it in their titles. These are the 104 terms we filter out to keep this feed to the real thing. A listing whose title contains any of them never reaches the feed, the price table or an alert. Many look unrelated to Wonder Boy in Monster World (Genesis) because they are: that's the noise.
Other titles & look-alikes 14
- -mega drive
- -megadrive
- -reprint
- -dragon's trap
- -dragons trap
- -wonder boy iii
- -wonder boy 3
- -monster lair
- -wonder boy v
- -monster world iv
- -monster world 4
- -golden axe
- -and wonder boy
- -re-po
Bootlegs & repros 5
- -custom case
- -repro
- -reproduction
- -aftermarket
- -repo
Broken, untested & empty listings 15
- -for parts
- -not working
- -non-working
- -non working
- -broken
- -as is
- -as-is
- -untested
- -doesnt work
- -does not work
- -not tested
- -parts only
- -no game
- -game not included
- -cart not included
Imports & regions 8
- -japanese
- -ntsc-j
- -famicom
- -jpn
- -jp
- -pal
- -eur
- -japan
Ports, remakes & re-releases 5
- -remake
- -switch
- -ps4
- -virtual console
- -hd
Lots & multi-item listings 8
- -lot
- -bundle
- -collection
- -set of
- -multiple games
- -3 games
- -4 games
- -5 games
Accessories, merch & paper 49
- -controller
- -headset
- -headphones
- -plush
- -figure
- -figurine
- -keychain
- -sticker
- -charger
- -cable
- -adapter
- -backpack
- -wallet
- -shirt
- -hoodie
- -jersey
- -poster
- -art book
- -artbook
- -soundtrack
- -vinyl
- -statue
- -amiibo
- -funko
- -pop figure
- -mousepad
- -lanyard
- -badge
- -trading cards
- -tcg booster
- -bookmark
- -instruction booklet
- -promo item
- -promotional
- -insert only
- -flyer
- -pamphlet
- -display card
- -demo cart
- -kiosk
- -case only
- -case-only
- -clamshell only
- -box and case
- -replacement box only
- -nfr
- -hat
- -pin
- -ost
How often qualifying deals appear
- 4 in the last 7 days (~0.57/day)
- 4 in the last 30 days (~0.13/day)
- 4 in the last 90 days (~0.04/day)
Wonder Boy in Monster World: collector & reseller spec sheet
- Platform and publisher. Sega Genesis cartridge, developed by Westone. This page tracks US (NTSC) copies; Japanese-location sellers and Mega Drive / PAL listings are filtered out of the feed.
- Carrier code, save and print variants. Check that the product code on the label matches the US release. The cartridge is old enough that any save-related claim should be confirmed with the seller. We have no verified detail on print runs, so treat "early print" premiums in a listing as the seller's claim, not a fact.
- Condition spread. Asking prices for loose cartridges, complete-in-box copies and sealed copies sit far apart, and graded sealed copies are listed at a large premium over everything else. Compare within a condition chip, not across them.
- Listing trap: two-game titles. Listings that name this game alongside another Genesis title, such as Golden Axe, are a single combined item, not a one-game copy. The feed filters the ones it recognises, but read titles that list two games.
- Listing trap: "Case only" and empty boxes. Boxes and cases with no cartridge turn up under the same title. Confirm the cartridge is included before bidding.
Buying Sega Genesis games: what to check by condition
These checks apply to every Sega Genesis cartridge. The item notes above cover what is specific to this game.
Loose
- Compare the label, shell color and front/back markings against a photo of a known-authentic cart. Repro labels are often glossier, blurrier or slightly off-color.
- Ask for a photo of the board or the back of the cart. An opened shell is not automatically bad (battery swaps are normal), but it should be disclosed.
- If the game saves to a battery, ask whether the save holds. Old save batteries fail with age regardless of what the listing says, so budget for a replacement.
CIB (complete in box)
- Confirm the box, manual and plastic case and cover art are all shown in the photos, not just listed in the title.
- Check that the box and manual are the same region and print as the cart. Mixed-and-matched "complete" copies are common.
- Box wear (crushing, tears, sticker residue) moves price far more than the cart does. Judge it from photos, not from the word "mint".
Sealed & graded
- For a graded copy, look the certification number up on the grading company's own site and confirm the photos match the slab you are buying.
- For an ungraded sealed copy, compare the wrap and seal pattern against a known factory-sealed example. Resealing is common, and a reseal on a loose game is worth a loose price.
- Ask for photos of every side, the seams and any price stickers. Refusing extra photos on a sealed listing is a red flag on its own.
FAQ
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How often do qualifying deals appear?
Is Wonder Boy in Monster World (Genesis) reproduced or commonly faked?
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Data freshness: last snapshot 2026-11-06 00:01 UTC . Atom feed