×

Monster Party Nintendo NES: PSA Pop Report + Loose / CIB / Sealed Prices

This post contains affiliate links — we may earn a commission at no extra cost to you.

PSA has graded 28 Monster Party Nintendo NES copies on record — 5 CIB, 23 sealed. Sealed copies trade in the $433 range. This page is the per-game pop + price + grading reference for Monster Party on Nintendo NES — updated weekly from PSA’s official population data and PriceCharting’s market catalog.

Quick Facts

• Title: Monster Party

• Console: Nintendo NES

• Variants tracked by PSA: 1

• Total PSA-graded copies: 28 (Loose: 0 · CIB: 5 · Sealed: 23)

• PriceCharting market data: available

PSA Pop by Condition

PSA tracks Monster Party populations independently for loose carts, complete-in-box (CIB), and factory-sealed copies — collectors price each condition separately because rarity and demand diverge sharply. Tables below show the grade-tier breakdown per condition, aggregated across 1 variant PSA recognizes for this title.

Loose Cartridge

PSA hasn’t graded any loose copies of Monster Party for Nintendo NES yet.

Complete in Box (CIB)

Total graded: 5

Factory Sealed

Total graded: 23

Sealed summary by variant:

Factory Sealed Grade × Seal Matrix

Rows show PSA numeric grades. Columns show seal grades. Cell values are PSA population counts. Aggregated across all variants. Top observed grade: 9.6 (PSA scale extends to 10).

Current Market Prices

All prices below are pulled directly from PriceCharting’s public catalog and refreshed each time this article regenerates (typically weekly). PriceCharting computes their values from active and recently-sold listings on eBay + their dealer network — independent of any data on this page. The Sealed column reflects PriceCharting’s “manual-only” / new tier — factory-sealed retail at average condition; specific graded-sealed prices vary sharply by numeric grade + seal letter (use the Sealed eBay browse link below for grade-specific comps).

• Loose cartridge: $20

• Complete in Box (CIB): $164

• Sealed: $433

Heritage Graded Sales

Heritage Auctions sold results below are real auction transactions for Monster Party on Nintendo NES. They complement the PriceCharting loose / CIB / sealed benchmarks above; they are not estimates and they are not blended into PriceCharting’s ungraded market prices.

Summary rows are title-level Heritage sale signals, sorted by format, recency, and realized-price signal. PSA production variants can price differently, so the sale records keep Heritage’s own variant notes visible instead of pretending every auction lot maps cleanly to a PSA variant row.

High-grade games can trade years apart, so older auction records stay visible; treat the latest-sale date as part of the comp, not just the dollar amount.

Showing the top 12 Heritage sale signals; the sale-record table below includes every Heritage auction sale used on this page.

Sale records:

Listings

Each link below opens an eBay search filtered to that condition, scoped to Monster Party on Nintendo NES. “Sold” pulls completed/sold listings (use this for price research). “Listings” pulls current active listings (use this to find a copy to buy).

• Loose Cartridge: Sold · Listings

• Complete in Box (CIB): Sold · Listings

• Factory Sealed: Sold · Listings

Why Monster Party Matters for Grading

With 28 PSA-graded copies on record, Monster Party sits in the mid-rarity tier for Nintendo NES — graded copies surface periodically on eBay but command meaningful premiums over raw. The sealed condition dominates submissions (23 of 28, ~82%) — a strong signal that’s where most collector value sits for this title. The sealed-to-loose price ratio is roughly 21× — sealed copies trade at $433 while loose carts move around $20. That spread means a fresh sealed find is the move; raw cart flips have thinner margins after grading fees.

Frequently Asked Questions

Is Monster Party Nintendo NES worth grading?

Mostly for sealed copies. The sealed-state population (23) outweighs CIB and loose for Monster Party, indicating sealed is where collector capital concentrates. CIB and loose grading is viable but margins are thinner after fees.

How rare is a graded sealed copy of Monster Party?

PSA tracks 23 graded sealed copies of Monster Party for Nintendo NES. The grade-tier breakdown above shows how those split across PSA’s numeric grades — top-grade copies (9.4+) are the scarcest and typically command the strongest premiums.

Should I buy a graded or raw copy of Monster Party?

Depends on your goal. Graded copies cost more upfront but come with PSA’s authenticity + condition guarantee — the right move for buy-and-hold collectors. Raw copies are cheaper but require condition assessment yourself, and the grading lottery means a $50 raw cart can come back as a $25 PSA 7 OR a $200 PSA 9.4. Use the per-condition pop and price data above to calculate expected value before you commit.

Why does PSA track multiple variants of Monster Party?

PSA’s database currently shows one tracked variant for Monster Party on Nintendo NES. That doesn’t mean only one variant exists — production codes that haven’t been submitted yet won’t appear on the census. Check the back of your cartridge for production-location markings (“Made in Japan”, “Made in Mexico”) and the box for ESRB-rating placement to identify your specific variant.

Sources

Pop counts pulled weekly from PSA Video Games population data. Prices from PriceCharting. PSA acquired WATA in July 2021 and completed the rebrand to PSA Video Games on October 20, 2025. PSA Video Games population data is the continuation of WATA’s population history. Heritage graded-sale comps come from Heritage Auctions sold archive lot pages linked in the sale-record table.

Related Resources

• Nintendo NES Game Library (forthcoming) — every variant PSA tracks for this console.

• Retro Video Game Collecting — pillar with broader strategy, market dynamics, and grading economics.