Question 1

What is the current market value of Tropical Tidal Wave #HGSS18?

Accepted Answer

Tropical Tidal Wave (HGSS Black Star Promos) is presently valued at about $329.78 in raw condition. The 7-day delta remains near neutral at 0.0%. Relative to the last 30 days, value is near baseline at $330.41. The 90-day window shows a floor near $329.46 and a peak around $352.22 (7% total spread), which maps to low-volatility movement. This version is categorized as Promo.

Question 2

Is Tropical Tidal Wave #HGSS18 a good investment or collectible?

Accepted Answer

Market structure summary: Short-term movement is stable (0.0% over 7 days), with price action clustered near recent averages. Observed 90-day bounds of $329.46 and $352.22 create a 7% band, matching a low-volatility profile. Relative to the 30-day baseline ($330.41), pricing is near equilibrium. This sample does not include a stable graded benchmark, which means active listings remain the best condition-adjusted reference.

Question 3

What is Tropical Tidal Wave #HGSS18 and what makes it special?

Accepted Answer

Tropical Tidal Wave is a HGSS Black Star Promos card from the 2010 release window. Its card type is Trainer. The rarity label is Promo. It carries a Item subtype designation. Card rules text: Flip a coin. If heads, discard all Trainer and Stadium cards your opponent has in play. If tails, discard all Trainer and Stadium cards you have in play. Attack names are not present in the current metadata snapshot. This print follows its listed rarity designation in set checklists and pricing references.

Question 4

What are the alternative Tropical cards available?

Accepted Answer

Other Tropical printings create a useful comparison set for Tropical Tidal Wave. The current sample spans 2 comparable cards from 1 set. Observed alternatives run from $318.06 to $474.25 (49% spread). The current card sits -17% versus the sampled alternative average of $396.15. Notable alternatives include Tropical Tidal Wave #27 (Nintendo Black Star Promos) at $474.25 and Tropical Tidal Wave #36 (Nintendo Black Star Promos) at $318.06.

Question 5

What set is Tropical Tidal Wave #HGSS18 from, and when was it released?

Accepted Answer

Release year for HGSS Black Star Promos is 2010. HGSS Black Star Promos is grouped under the HeartGold & SoulSilver era. Set size is 25 cards, which categorizes HGSS Black Star Promos as compact. As of 2026, the set is 16 years old and fits a legacy-era profile. Within this set, Tropical Tidal Wave is card number HGSS18 with a Promo designation.

Tropical Tidal Wave #HGSS18

Price history

All Tropical Tidal Wave cards

Card details