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Holo1 / 1

Type: Holo
Foil pattern: Cosmos

What do these features mean?

One card can have several editions. Type and foil pattern are different features; a stamp or print edition can distinguish another edition. If other features are unknown, we don't show them here.

Type: The finish, such as non-holo, holo or reverse holo.
Foil pattern: The pattern of the foil, for example Cosmos or Pokeball.
Edition / subtype: A print version or other distinguishing feature, such as Unlimited or Shadowless.
Stamp: An additional mark, such as 1st Edition or a promotional stamp.
Size: The card size, when known, such as standard or jumbo.

Pokémon TCG

Rillaboom

SWSH Black Star PromosSWSHP SWSH277/307

Set: SWSH Black Star PromosSword & Shield
Card number: SWSHP SWSH277/307
Rarity: Promo
Set released: 15 Nov 2019
Language: English

LATEST OBSERVATION

Current prices

Holo - Cosmos

Cardmarket€0.39Trend price29 Oct 2026

Price information

Cardmarket · Trend price

Source reference · Regular source categoryEUR

Average sale price: €0.33
Lowest price: €0.02

Recorded: 29 Oct 2026 · Source update: 28 Oct 2026

About source references

General Cardmarket category: no separate holo reference is available. This is not an exactly confirmed price for the selected edition.

All source prices

All source metrics for this card, including other finishes.

Regular source category EUR

Cardmarket

Cardmarket groups this price as regular. This does not automatically mean the card is non-holo.

Trend priceObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.39Up 21.9% compared with 1 day earlier (€0.32 · 28 Oct 2026)
Average sale priceObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.33
24-hour averageObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.87
7-day averageObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.38
30-day averageObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.34
Lowest priceObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.02

Regular source category EUR

TCGdex / Cardmarket

Cardmarket groups this price as regular. This does not automatically mean the card is non-holo.

Trend priceObserved: 19 Oct 2026 · Source updated: 18 Oct 2026: €0.30Unchanged compared with 1 day earlier (€0.30 · 18 Oct 2026)

Holofoil USD (source; conversion unavailable)

TCGplayer

Market priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$0.55
Lowest priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$0.25
Median priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$0.59
Highest priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$15.32

VALUE OVER TIME

Price history

Holo - Cosmos

18 Oct 2026 - 29 Oct 2026 · EUR · 10 recorded days

Customize chart

Compare price seriesCardmarket · Trend price · Regular source category · Source reference · 10 recorded daysCardmarket · Average sale price · Regular source category · Source reference · 1 recorded dayCardmarket · 24-hour average · Regular source category · Source reference · 1 recorded dayCardmarket · 7-day average · Regular source category · Source reference · 1 recorded dayCardmarket · 30-day average · Regular source category · Source reference · 1 recorded dayCardmarket · Lowest price · Regular source category · Source reference · 1 recorded day

View observations (10)

Price history
Observed	Source / price type	Price
18 Oct 2026	TCGdex / Cardmarket · Trend price · Regular source category · Source reference	€0.30
19 Oct 2026	TCGdex / Cardmarket · Trend price · Regular source category · Source reference	€0.30
21 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.31
23 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.31
24 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.31
25 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.30
26 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.29
27 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.32
28 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.32
29 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.39

About this history

This history belongs to the general Cardmarket category, not an exactly confirmed physical edition.

Trend and market prices by source. Source references describe the finish; only exactly matched prices describe this physical edition.

About our prices

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Rillaboom SWSH Black Star Promos #SWSH277 price & card details | TheDeckonomy

Back to SWSH Black Star Promos

Holo1 / 1

Type: Holo
Foil pattern: Cosmos

What do these features mean?

One card can have several editions. Type and foil pattern are different features; a stamp or print edition can distinguish another edition. If other features are unknown, we don't show them here.

Type: The finish, such as non-holo, holo or reverse holo.
Foil pattern: The pattern of the foil, for example Cosmos or Pokeball.
Edition / subtype: A print version or other distinguishing feature, such as Unlimited or Shadowless.
Stamp: An additional mark, such as 1st Edition or a promotional stamp.
Size: The card size, when known, such as standard or jumbo.

Pokémon TCG

Rillaboom

SWSH Black Star PromosSWSHP SWSH277/307

Set: SWSH Black Star PromosSword & Shield
Card number: SWSHP SWSH277/307
Rarity: Promo
Set released: 15 Nov 2019
Language: English

LATEST OBSERVATION

Current prices

Holo - Cosmos

Cardmarket€0.39Trend price29 Oct 2026

Price information

Cardmarket · Trend price

Source reference · Regular source categoryEUR

Average sale price: €0.33
Lowest price: €0.02

Recorded: 29 Oct 2026 · Source update: 28 Oct 2026

About source references

General Cardmarket category: no separate holo reference is available. This is not an exactly confirmed price for the selected edition.

All source prices

All source metrics for this card, including other finishes.

Regular source category EUR

Cardmarket

Cardmarket groups this price as regular. This does not automatically mean the card is non-holo.

Trend priceObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.39Up 21.9% compared with 1 day earlier (€0.32 · 28 Oct 2026)
Average sale priceObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.33
24-hour averageObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.87
7-day averageObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.38
30-day averageObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.34
Lowest priceObserved: 29 Oct 2026 · Source updated: 28 Oct 2026: €0.02

Regular source category EUR

TCGdex / Cardmarket

Cardmarket groups this price as regular. This does not automatically mean the card is non-holo.

Trend priceObserved: 19 Oct 2026 · Source updated: 18 Oct 2026: €0.30Unchanged compared with 1 day earlier (€0.30 · 18 Oct 2026)

Holofoil USD (source; conversion unavailable)

TCGplayer

Market priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$0.55
Lowest priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$0.25
Median priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$0.59
Highest priceObserved: 21 Oct 2026 · Source updated: 15 Oct 2026: US$15.32

VALUE OVER TIME

Price history

Holo - Cosmos

18 Oct 2026 - 29 Oct 2026 · EUR · 10 recorded days

Customize chart

View observations (10)

Price history
Observed	Source / price type	Price
18 Oct 2026	TCGdex / Cardmarket · Trend price · Regular source category · Source reference	€0.30
19 Oct 2026	TCGdex / Cardmarket · Trend price · Regular source category · Source reference	€0.30
21 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.31
23 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.31
24 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.31
25 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.30
26 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.29
27 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.32
28 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.32
29 Oct 2026	Cardmarket · Trend price · Regular source category · Source reference	€0.39

About this history

This history belongs to the general Cardmarket category, not an exactly confirmed physical edition.

Trend and market prices by source. Source references describe the finish; only exactly matched prices describe this physical edition.

About our prices