Sea Serpent Warrior of Darkness YU-GI-OH

Sea Serpent Warrior of Darkness [1st Edition] has a TCGplayer market price of $0.21 as of 2026-11-02.

Sea Serpent Warrior of Darkness #SD4-EN003 is trending down: $0.21 today, down 13% in 30 days and 13% below its high of $0.24 (2026-09-16), the highest since we began tracking (2026-09-16), but near its low of $0.21 (2026-10-09). TCGplayer market price as of 2026-11-02, tracked daily since 2026-09-16. Other windows: up 0.0% over 7 days. A 30-day drop this size is common after a reprint or a set rotation; the daily chart shows whether it has found a floor.

TickerMint began tracking Yu-Gi-Oh prices on 2026-09-16, after Sea Serpent Warrior of Darkness came out, so these are the highest and lowest prices since we began tracking (2026-09-16), not all-time records. In TickerMint's daily data (since September 2026), the TCGplayer market price for Sea Serpent Warrior of Darkness [1st Edition] (all conditions) peaked at $0.24 (2026-09-16) and bottomed at $0.21 (2026-10-09).

A PSA 10 Sea Serpent Warrior of Darkness #SD4-EN003 sells for about $40.52, based on PriceCharting's sold listings as of Nov 2, 2026. Other 10s: BGS 10 $53.00, CGC 10 $16.00, SGC 10 $24.00. A grade 9 (any grader) sells for about $6.00. An ungraded copy sells for about $0.27. Prices from PriceCharting (pricecharting.com).

Grading Sea Serpent Warrior of Darkness #SD4-EN003 pays only if you expect a 10: PSA 10 copies sell for about $40.52 and grade 8 copies for $5.60 (PriceCharting sold listings, Nov 2, 2026) vs $0.21 raw (TCGplayer market), and after a $25 grading fee, $10 shipping and 13% selling fees you'd need about 1 in 1 copies to grade a 10 to break even (a 100% chance). That assumes a copy that misses the 10 sells as a grade 8. Whether your copy grades a 10 depends on its centering, corners, edges and surface. Prices from PriceCharting (pricecharting.com).