Sea Monster of Theseus
Ungraded card references. Condition and selling costs affect what you receive; graded slab values are not covered.
Sea Monster of Theseus #MAMO-EN071 from Magnificent Monsters (1st Edition): TCGPlayer US-market reference US$0.29, updated 23 Oct 2026. Source currency: USD.
What does this price mean?
TCGPlayer is a US-market reference in USD. Cardmarket uses a Non-foil guide · EUR source, converted from EUR to USD; it is not UK-only pricing. Prices refer to the displayed printing. Your card's condition, language, grading and selling costs can affect what you receive.
US market price history · 2 Sept 2026 – 23 Oct 2026
28 recorded price points. Change compares the first and last points shown.
View recorded prices as a table
| Date | Market price |
|---|---|
| 2 Sept 2026 | $2.95 |
| 3 Sept 2026 | $2.42 |
| 4 Sept 2026 | $0.36 |
| 5 Sept 2026 | $0.35 |
| 6 Sept 2026 | $0.32 |
| 7 Sept 2026 | $0.32 |
| 8 Sept 2026 | $0.27 |
| 9 Sept 2026 | $0.31 |
| 10 Sept 2026 | $0.26 |
| 11 Sept 2026 | $0.27 |
| 12 Sept 2026 | $0.26 |
| 13 Sept 2026 | $0.23 |
| 14 Sept 2026 | $0.33 |
| 15 Sept 2026 | $0.37 |
| 17 Sept 2026 | $0.28 |
| 20 Sept 2026 | $0.27 |
| 23 Sept 2026 | $0.27 |
| 26 Sept 2026 | $0.27 |
| 29 Sept 2026 | $0.23 |
| 2 Oct 2026 | $0.25 |
| 5 Oct 2026 | $0.26 |
| 8 Oct 2026 | $0.27 |
| 15 Oct 2026 | $0.28 |
| 16 Oct 2026 | $0.29 |
| 17 Oct 2026 | $0.24 |
| 20 Oct 2026 | $0.31 |
| 21 Oct 2026 | $0.30 |
| 23 Oct 2026 | $0.29 |
Sales History
687 sold · all variants(30D)Sales recorded · 21 Sept 2026 – 20 Oct 2026. Sales are grouped into reporting periods; the final date is the latest available data.
Showing 1st Edition - Near Mint - English
View recorded sales data
| Date | Units sold | Transactions | Market price | Details |
|---|---|---|---|---|
| 21/09/2026 | 141 | 75 | $0.26 | View sales |
| 24/09/2026 | 94 | 59 | $0.27 | View sales |
| 27/09/2026 | 91 | 46 | $0.27 | View sales |
| 30/09/2026 | 54 | 31 | $0.23 | View sales |
| 03/10/2026 | 38 | 24 | $0.24 | View sales |
| 06/10/2026 | 37 | 28 | $0.29 | View sales |
| 09/10/2026 | 78 | 46 | $0.25 | View sales |
| 12/10/2026 | 74 | 34 | $0.26 | View sales |
| 15/10/2026 | 32 | 24 | $0.27 | View sales |
| 18/10/2026 | 43 | 32 | $0.29 | View sales |
Average recorded market price is the simple mean of reporting periods with a positive market price; it is not weighted by sales volume. A dash means no usable observation is available.