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tcggraph

Magic: The Gathering · Foreign Black Border · #290 · rare

Underground Sea (Mer souterraine)

Underground Sea (Foreign Black Border #290, Magic) price: Cardmarket from €950.00, trend €1,580.

€950.00
Cardmarket, cheapest
any language, any condition
€1,580
Cardmarket trend
7-day average €1,634, 30-day €1,386
TCGplayer market
Not quoted yet.
Graded
Not in the graded index yet.

In your app

The same numbers, as JSON

Everything on this page is one call to the TCGGraph API: card mtg_8d4a47d3-75f with its Cardmarket and TCGplayer quotes, the per-language and per-condition lows, graded prices and realised sales. REST or GraphQL, one key.

Card id
mtg_8d4a47d3-75f
Cardmarket product
15482
TCGplayer product
109799
Artist
Rob Alexander
Set released
11 Apr 1994
Prices updated
21 Sept 2026
REST
curl "https://api.tcggraph.com/v1/cards/mtg_8d4a47d3-75f" \
  -H "Authorization: Bearer $TCGGRAPH_KEY"

# realised sales by day
curl "https://api.tcggraph.com/v1/prices/mtg_8d4a47d3-75f/sales?days=90" \
  -H "Authorization: Bearer $TCGGRAPH_KEY"
GraphQL
{
  card(id: "mtg_8d4a47d3-75f") {
    name
    prices { source finish currency low trend market }
    printings { key label kind imageFrom images { small } prices { source market trend } }
    languagePrices {
      language finish low lowNm offers truncatedAbove
      conditions { condition low offers }
    }
    gradedPrices { grader grade price }
  }
}

Prices on this page are read from Cardmarket and TCGplayer and refreshed daily; graded quotes come from TCGGraph's graded index. TCGGraph does not sell cards and carries no affiliate links. Card names and artwork are the property of Wizards of the Coast.