The Monopoly Pricing Playbook: What to Charge When You're the Only Seller on COMC

Kathryn Frese
Aug 20
5 min read

The Situation

You just listed a TAG 9 Astral Titan from MTG Final Fantasy on COMC. You check the platform — there are zero other sellers. No comps. No last sold. No SRP. Just you and a blank pricing field.

This is a COMC monopoly — and it happens more often than you’d think, especially with graded cross-TCG inventory, Chinese-language variants, and niche sets. But having a monopoly doesn’t automatically mean you can charge whatever you want. Price too high and the card sits forever. Price too low and you leave money on the table.

Here’s a practical framework for pricing cards when you’re the only seller on the platform.

Step 1: Find Your Anchor (Even If It’s Not on COMC)

Just because there are no COMC comps doesn’t mean there’s no market data. You just need to look wider:

eBay sold listings: What are graded and raw versions actually selling for? Filter by sold, not active.
TCGplayer market price: For Pokémon and MTG, this gives you a raw baseline.
PriceCharting: Useful for Pokémon, especially for tracking PSA 10 vs raw spreads.
PSA/CGC comp slabs: If a PSA 9 of the same card sold for $15, your TAG 9 should be in that neighborhood — adjusted for TAG’s market recognition.
Cross-platform equivalents: If the card sells on TCGplayer for $5 raw, a graded slab commands a premium — but how much depends on the game and grade.

Your anchor is the closest real-world transaction, not a guess.

Step 2: Apply the Grading Premium

Once you have a raw comp, apply the grading premium. This varies by:

Grade: A 10 commands a bigger premium than a 9. A 7.5 is a much smaller premium.
Grader: PSA 10s still carry the highest market premium. TAG 10s are growing but trade at a slight discount to PSA in most games. TAG 9s trade closer to raw + slab cost.
Game: Pokémon grading premiums are well-established. One Piece premiums are higher (thinner graded pool). MTG art card premiums are unpredictable (niche collector market).

Rule of thumb for TAG slabs:

TAG 10: 1.5x to 3x raw comp (depending on card liquidity and game)
TAG 9: 1.2x to 1.8x raw comp
TAG 8.5 or below: 1.0x to 1.3x raw comp (slab adds modest value, grade limits upside)

Step 3: Apply the Monopoly Premium

This is where being the only seller on COMC adds value. The monopoly premium is the convenience fee a buyer pays for not having to go to eBay, deal with individual sellers, or wait for auction closings.

Practical monopoly premium tiers:

Small (10–25%): Card has active comps elsewhere (eBay, TCGplayer). Buyer can find it easily on other platforms. The monopoly is just convenience.
Medium (25–50%): Card has some comps but they’re scattered or in different conditions/grades. Being the only graded slab on COMC adds real value.
Large (50–100%): No comps anywhere for this specific card + grade + language combination. Pure scarcity pricing. The buyer either pays your price or doesn’t get the card.

Step 4: The COMC Fee Reality Check

Before you set your final price, remember COMC takes a cut. The fee structure matters:

COMC charges a selling fee based on the final sale price (check current fee schedule)
There’s also a per-item processing fee when cards are added to your inventory
Your net proceeds = sale price - COMC fees - original card cost - grading cost

Always price to your net, not your gross. A $10 card that nets you $3 after fees isn’t a win if you paid $5 for it.

Step 5: The Hold vs. List Decision

Not every monopoly should be listed immediately. Ask yourself:

Is the market still maturing? If the set just released, prices may still be correcting. Wait 1–2 weeks for the market to settle before listing.
Is there upcoming catalyst? An upcoming tournament, set rotation, or media event could drive demand. Holding for the catalyst may be worth more than listing now.
Are you the only graded slab in existence? If you have the only TAG 10 of a card and the graded pool is extremely thin, patience is your friend. Don’t leave money on the table by pricing for a quick sale.
Do you need the cash flow? If yes, price to sell. If no, price to hold and let the market come to you.

Real Examples from BVP’s Current Inventory

Here’s the framework applied to cards we just listed:

Astral Titan (Primeval Titan) — MTG FF Through the Ages #0048, TAG 9

Raw comp: $4.43–$5.99 (TCGplayer, Card Kingdom)
Grading premium: TAG 9 ≈ 1.5x raw = ~$7–$9
Monopoly premium: Large (zero graded slabs on COMC, zero competition) = +75%
Suggested ask: $10.00 — priced to test the market. If it sells fast, next listing goes higher.

Mega Heracross ex — Inferno X M2 Japanese #093 SR, TAG 9

Raw comp: $2.20–$3.10 (TCGplayer, eBay)
PSA 9 comp: $14.52 (PokeInvest)
Grading premium: TAG 9 ≈ 1.8x PSA 9 ratio = ~$12–$15
Monopoly premium: Medium (no graded slabs on COMC, but raw comps exist on eBay)
Suggested ask: $15.00 — JP Mega Era SR with graded scarcity on COMC

Deoxys VMAX — Brave Stars Chinese CS5a #053, Raw NM

Raw comp: $1.50–$2.76 (eBay, PriceCharting)
No grading premium (raw card)
Monopoly premium: Large (zero listings on COMC, Chinese-language variant)
Suggested ask: $4.00 — Chinese variant scarcity on COMC. Patience play.

Victini — Black Bolt SV11B Japanese #012, Raw NM

Raw comp: $0.99–$1.50 (eBay, TCGplayer)
No grading premium (raw card)
Monopoly premium: None — there are 2 competitors at $1.50 on COMC
Suggested ask: $1.25 — undercut competitors for sell-through. This is NOT a monopoly. Price competitively.

The Trap: Pricing So High Nothing Moves

The biggest mistake monopoly sellers make is confusing “no competition” with “unlimited pricing power.” You still need a buyer.

If your card has been listed for 90+ days with zero offers, your monopoly premium is too high. COMC shows how many views and watchers each card has — use that data. If you’re getting views but no offers, drop the price 10–15% and watch what happens.

A card that sells for $8 in 2 weeks is better than a card listed at $15 that sits for 6 months. Capital efficiency matters more than top-line pricing.

The Quick-Reference Monopoly Pricing Formula

For a graded card with no COMC comps:

Suggested Ask = (Raw Comp × Grade Multiplier) × (1 + Monopoly Premium)

Grade Multiplier: TAG 10 = 2.0–3.0x, TAG 9 = 1.2–1.8x, TAG 8.5 = 1.0–1.3x
Monopoly Premium: 10–25% (comps exist elsewhere), 25–50% (thin comps), 50–100% (no comps anywhere)

For a raw card with no COMC comps:

Suggested Ask = Raw Comp × (1 + Monopoly Premium)

Then subtract COMC fees to check your net. If the net doesn’t clear your cost basis + a reasonable margin, don’t list — hold.

Conclusion

Monopoly pricing isn’t about charging the most you can — it’s about finding the price where the card sells within your target window while maximizing net proceeds. The formula is simple: anchor to real comps, apply the grade premium, stack the monopoly premium, and always check your net after fees.

The card doesn’t care that you’re the only seller. The buyer does — but only up to a point.

Disclaimer

This article is general information for resale operations and does not rely on any specific marketplace, grading company, or consignment service. It does not constitute financial, investment, tax, legal, or business advice. Always do your own research and consult a qualified professional before making business decisions. BlueVioletPoke LLC and its authors are not liable for any losses or damages resulting from the use of this content.