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Underground Sea
Magic: The Gathering · Rare

Underground Sea

$523.44
+$0.00+0.0% · 30D
Aggregated from verified sold data · eBay, TCGplayer & PriceCharting
Where these prices come from

Magic: The Gathering prices on TCGIndex are TCGplayer market prices (the US market), in US dollars, with graded and sold prices from PriceCharting and eBay. Another currency is a conversion from USD at the day's rate, not a European market price. We do not use Cardmarket or Cardtrader prices for Magic: The Gathering.

Market Health
Healthy
Well supported
Confidence
77/100
High reliability
Liquidity
Low
Thin market
Verified Sales
18
Updated 1d ago
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Model signal
Before the price moves

We find the Magic: The Gathering cards about to rise.

Every night the model scores every Magic card on the market. Every morning at 07:30 UTC it publishes the one most likely to gain 10% within 30 days, with its entry price and the reasons, then scores it in public.

See today’s Magic pick

Published this morning, public in 14 days. Full record

Price & Volume
Market price Sales volume
Jul 2026 – today
Sales & Liquidity
Market Price$523.44
7-Day Change+0.0%
90-Day Change+47.1%
LiquidityLow
Market TrendStable
Price by Grade
BGS 10$735·
PSA 10$565·
Raw· 18 sales$523·
PSA 9$479·
CGC 10$339·
SGC 10$339·
Price by Condition · 3
Anchored to market price · condition spread from TCGplayer
Near Mint
Normal · English
$523.44
+24.4%
Lightly Played
Normal · English
$259.11
+0.0%
Damaged
Normal · English
$120.92
+0.0%

Underground Sea price history

Near Mint market priceon the dates below, from TCGIndex's daily record (29 days tracked). High $599.99 on Aug 2026, low $289.14 on Jan 2026.

WhenPricevs today
Today$599.99
7 days ago$462.50+29.7%
30 days ago$393.31+52.5%
90 days ago$393.31+52.5%
6 months ago$306.79+95.6%
MonthMonth-end price
Jan 2026$303.14
Feb 2026$306.79
Mar 2026$311.16
Apr 2026$324.42
May 2026$393.31
Jul 2026$462.50
Aug 2026$599.99

Underground Sea PSA 10 price and graded values

What Underground Sea (30th Anniversary Edition) sells for by grade, from verified sold listings. A PSA 10 sells for $565.00 against $523.44 raw, a 1.1x grading premium. PSA 9 copies trade around $479.03.

GradeMarket price
Raw (ungraded)$523.44
CGC 10$339.00
SGC 10$339.00
PSA 9$479.03
PSA 10$565.00
BGS 10$735.00

Graded prices: PriceCharting sold data, refreshed daily. Grading costs, turnaround and the odds of a 10 decide whether the premium is worth chasing. Most valuable Magic: The Gathering PSA 10 cards

Underground Sea FAQ

How much is Underground Sea worth right now?
Underground Sea from 30th Anniversary Edition is trading around $523.44 raw (ungraded) on the secondary market, and around $565.00 as a PSA 10. TCGIndex refreshes this price every day.
How much is Underground Sea PSA 10 worth?
A PSA 10 Underground Sea sells for around $565.00, a PSA 9 around $479.03, against $523.44 for a raw copy. These are market prices from verified sold listings, updated daily.
Is Underground Sea worth grading?
A PSA 10 Underground Sea is worth about 1.1 times the raw price ($565.00 vs $523.44). Grading pays off when the gap covers the grading fee and the risk of a 9 ($479.03): it usually does for a clean, centered copy of a card at this price, and rarely for a card worth a few dollars raw.
Is Underground Sea going up or down?
Underground Sea is up +0.0% over 30 days, up +0.0% over 7 days. The full price history is on this page.
Is Underground Sea a good investment?
TCGIndex doesn't give financial advice, but here's the data worth knowing: it sits around $523.44, up +0.0% over the last 30 days, with low volatility. Prices can move fast, so look at the trend and your own timeframe before you buy. TCGIndex publishes one Magic: The Gathering pick every morning; each pick becomes public 14 days later and is scored at day 30.