Rin and Seri, Inseparable Core Set 2021 #278 (Foil)
Confidence high · estimate, not an appraisal · How we price →
Rin and Seri, Inseparable is a Mythic Magic: The Gathering card from Core Set 2021 (#278), illustrated by Leesha Hannigan. Its current blended market value is $33.20 ungraded, with a PSA 10 worth around $72. Prices update from real market data.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10 | $72$72–$72 | |
| PSA 9 | $35$35–$35 |
What this price is based on
High confidence11 sales in 90 days, closely clustered.
Recent Raw sales
- Aug 7, 2026eBay — Rin and Seri, Inseparable Core Set 2021 Promo Foil #278 RGW Rare$12.50
- Aug 5, 2026eBay — Rin and Seri, Inseparable Buy-A-Box Promos Foil Mythic #278 MTG NMNM$22.99
- Aug 1, 2026eBay — Rin and Seri Inseparable Foil Buy-A-Box Promo M21 #278 MTG Near MintNM$19.97
- Jul 27, 2026eBay — MTG FOIL Rin and Seri, Inseparable- DAMAGED -Buy-a-Box Promo Magic Card # 278DM$19.50
- Jul 19, 2026eBay — MTG Rin and Seri, Inseparable (278/471) Core Set 2021 LP FOIL- Buy-a-Box SpanishLP$25.99
- Jul 19, 2026eBay — Rin and Seri, Inseparable Buy-A-Box Foil Core Set 2021 (RU) russian MTG$17.94
- Jul 14, 2026eBay — MTG Rin and Seri, Inseparable #278 NM FoilNM$27.00
- Jun 16, 2026eBay — Rin and Seri, Inseparable NM Foil Borderless Buy-A-Box Promos M21 278 MTGNM$19.97
From 14 completed sales recorded between May 13, 2026 and Aug 7, 2026. Sold prices only — asking prices are never counted.
Grade it or not
Not enough graded evidence yet — 0 graded sales recorded.
✨ Is it worth it?
An AI market read of this card — value, momentum, grading economics, liquidity. It lays out the data; you decide.
Price history · Raw
Card details
- Number
- #278
- Rarity
- Mythic
- Illustrator
- Leesha Hannigan
- Colour
- Green / Red / White
More from Core Set 2021
Where to buy & check prices
Frequently asked questions
How much is Rin and Seri, Inseparable worth?
Rin and Seri, Inseparable (Core Set 2021 #278) is worth around $33.20 ungraded, or about $72 in PSA 10, based on live Magic: The Gathering market data.
What is a PSA 10 Rin and Seri, Inseparable worth?
A PSA 10 Rin and Seri, Inseparable sells for around $72, roughly 2× the ungraded price.
Where can I buy Rin and Seri, Inseparable?
You can buy Rin and Seri, Inseparable on TCGplayer, Cardmarket and eBay — see the live listings on this page. Always compare against the blended market value first.
What rarity is Rin and Seri, Inseparable?
Rin and Seri, Inseparable is a Mythic Magic: The Gathering card from the Core Set 2021 set, illustrated by Leesha Hannigan.
Cite & embed this card
Free to use with attribution to CardTrack.
Rin and Seri, Inseparable (Core Set 2021 #278) — Magic: The Gathering market value $33.20, PSA 10 $71.66. Source: CardTrack, https://cardtrack.com/magic/card/core-set-2021/rin-and-seri-inseparable-278<iframe src="https://cardtrack.com/embed/card?id=M21-278" width="100%" height="160" style="border:0;max-width:460px" title="Rin and Seri, Inseparable price — CardTrack" loading="lazy"></iframe>
<p style="font:12px system-ui">Source: <a href="https://cardtrack.com">CardTrack</a></p>