DEM4 · Yu-Gi-Oh!
Advanced Demo Deck Extra Pack
10 cards, led by Link Spider at $3.27.
Released Jan 6, 2018
Set index · DEM4
56.19
−43.81 (−43.81%)1Y
- 1W
- +0.40%
- 1M
- −16.22%
- 1Y
- −43.81%
52W low 55.96high 102.78
- Cards
- 10
- Priced printings
- 10
- Sales a week
- 2.3
- Typical single, Near Mint
- $0.34
- Popularity
- 18/100
- Standing
- #602
The index
A score that starts at 100 and moves with the set's fair value, compared on the same printings week to week.
One Near Mint copy of every printing at fair value; the chase cards move it most.
Master set value
one of every printing · fair value · Nov 10, 2026
- NM
- $7.49
- 10 of 10 priced · 100% from sales
- LP
- $6.71
- 10 of 10 priced · 90% from sales
- MP
- $5.98
- 10 of 10 priced · 80% from sales
- HP
- $5.09
- 10 of 10 priced · 20% from sales
- DMG
- $4.48
- 10 of 10 priced · 0% from sales
Near Mint was $13.46 on Aug 30, 2026 (-44.4%). Totals move when printings are added or first priced; the index above doesn't.
Cards
10 of 10 valued in Near Mint

Link Spider
Common$3.27
Gaia Knight, the Force of Earth
Common$1.97
Polymerization
Common$0.58
First of the Dragons
Common$0.43
Lancephorhynchus
Common$0.40
Gem-Knight Pearl
Common$0.28
Galaxy Serpent
Common$0.24
Flash Knight
Common$0.20
Foucault's Cannon
Common$0.16
Mandragon
Common$0.11
In the set
10 singles tracked
- Common10 · 100%
How to read the set index
- What is the typical single?
- The median fair value of the set's Near Mint English singles — the price in the middle, so one chase card can't drag it up. Fair value comes from real sales only; the marketplace's Market Price is shown on card pages but never counted.
- What does the index line show?
- The Set Value Index: one Near Mint copy of every printing at fair value, compared week to week on the same printings, so it moves with the set's value — the chase cards most. It starts at 100; the 90-day figure is that line over the last quarter. Beside it, the typical card (every card counted the same, chases left out) and the chases on their own.
- How is popularity scored?
- Out of 100, against the rest of the game: how much the set's cards sell for, how many of them sell each week, how many cards it holds and how its index has moved. It ranks sets; it isn't a price.




