Mega Man Battle Network 4 Blue Moon (GBA) — Price Guide & Live Deals
Live GBA Mega Man Battle Network 4 Blue Moon deals across loose, CIB and sealed copies: what a fair asking price looks like and what to avoid.
Right now: Loose prices roughly flat over 90 days, 48 current qualifying listings.
Current qualifying listings
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Mega Man Battle Network 4: Blue Moon (GBA, 2004) Authentic + Tested!
$29.99 USD
+$5.99 shipping
★ 100% · 1,496 ratings
Listed yesterday · checked yesterday
Mega Man Battle Network 4: Blue Moon Game Boy Advance (GBA) Tested
$17.99 USD
Shipping calculated
★ 100% · 230 ratings
Listed 10 days ago · checked 10 days ago
Mega Man Battle Network 4 Blue Moon Game Boy Advance GBA - QUICKEST SHIPPING!
$18.99 USD
Free shipping
★ 99% · 204 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4: Blue Moon Game Boy Advance Game Only NTSC-U/C Tested
$14.75 USD
Shipping calculated
★ 99.9% · 4,346 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4: Blue Moon (Nintendo Game Boy Advance, 2004) CIB
$69.00 USD
★ 100% · 785 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4 Blue Moon Gba Nintendo GameBoy Advance Authentic!!
$15.99 USD
+$7.99 shipping
★ 99.9% · 8,995 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4 Blue Moon Nintendo Game Boy Advance GBA Cartridge
$19.99 USD
+$5.99 shipping
★ 99% · 1,351 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4 Blue Moon - Gameboy Advance GBA - Working and Tested
$21.39 USD
★ 100% · 3,701 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Megaman Battle Network 4 : Blue Moon - Nintendo Game Boy Advance GBA - Tested
$21.42 USD
★ 99.9% · 5,742 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Capcom Mega Man Battle Network 4 Blue Moon Game Boy Advance NTSC-U/C E
$18.00 USD
Shipping calculated
★ 100% · 64 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4: Blue Moon (Nintendo Game Boy Advance GBA) Authentic
$16.99 USD
★ 100% · 239 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Mega Man Battle Network 4 Blue Moon Nintendo Game Boy Advance GBA Tested Works
$39.99 USD
+$8.00 shipping
★ 100% · 3,411 ratings
Mega Man Battle Network 4 Blue Moon Game Boy Advance · 10/26/2026 5:49 AM
Roughly one qualifying listing every 15 days.
Asking-price ranges by condition
| Condition | Min | 25% | Median | 75% | Max | N |
|---|---|---|---|---|---|---|
| Loose | $10.00 | $17.49 | $20.00 | $28.00 | $90.93 | 79 |
| CibLow sample size | $42.85 | $42.85 | $69.00 | $76.74 | $99.97 | 4 |
| Sealed | $18.99 | $201.99 | $300.00 | $399.99 | $400.00 | 5 |
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 Mega Man Battle Network 4 Blue Moon (GBA).
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 6 listings we observed for this game in the last 30 days, we filtered out 4 of 6 (~67%) for quality reasons. The remaining 2 are what we'd actually surface.
- 2 shipped from a region we exclude
- 1 seller had too few feedback ratings
- 1 matched a bootleg / out-of-scope keyword
What the feed excludes
An eBay search for Mega Man Battle Network 4 Blue Moon (GBA) 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 98 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 Mega Man Battle Network 4 Blue Moon (GBA) because they are: that's the noise.
Other titles & look-alikes 10
- -red sun
- -redsun
- -double pack
- -rockman
- -exe
- -star force
- -harry potter
- -toner
- -tournament
- -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 6
- -japanese
- -ntsc-j
- -famicom
- -jpn
- -jp
- -japan
Lots & multi-item listings 8
- -lot
- -bundle
- -collection
- -set of
- -multiple games
- -3 games
- -4 games
- -5 games
Accessories, merch & paper 54
- -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
- -manual only
- -box only
- -guide
- -nfr
- -hat
- -pin
- -ost
- -art
- -manual
How often qualifying deals appear
- 1 in the last 7 days (~0.14/day)
- 2 in the last 30 days (~0.07/day)
- 2 in the last 90 days (~0.02/day)
Mega Man Battle Network 4 Blue Moon: collector & reseller spec sheet
- Which game this is. Mega Man Battle Network 4 is a Capcom Game Boy Advance release from 2003-2004 that shipped as two versions, Red Sun and Blue Moon. This page tracks the Blue Moon version only. It follows Mega Man Battle Network 3 Blue.
- Save mechanism & product code. Check that the label's product code matches the US release. We don't state the exact code or save type here, because it is a known confusion zone. A cartridge this old can lose its saved data, so ask the seller for a photo of the file screen.
- Print variants. We can't name a distinguishing mark for reprints with confidence. Compare label and back-of-cart photos against a known-authentic copy before paying a premium for a "rare" listing.
- Listing traps seen while tuning. Red Sun and Blue Moon are often sold together or named in the same title; the feed rejects those, so read the title and photos if you want only Blue Moon. Manual-only and box-only listings carry the full game name, and their asking prices can look like a cartridge deal. Sellers often write the number after the subtitle ("Battle Network Blue Moon 4"). Graded and sealed copies ask far above loose cartridges, so check the grade or seal photos.
Buying Game Boy Advance games: what to check by condition
These checks apply to every Game Boy Advance 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 inner tray or insert 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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More from this franchise
More Game Boy Advance deal pages
Data freshness: last snapshot 2026-11-06 00:01 UTC . Atom feed