Base was released in 1999. Series classification for this set is Base.
With 102 listed cards, this is a mid-size set by modern TCG standards. As of 2026, the set is 27 years old and fits a legacy-era profile.
Grass Energy (#99) is one of the Common prints in this expansion.
In 1999, Base introduced this print of Grass Energy. Its card type is Energy.
The rarity label is Common. Energy typing is Grass.
This gives collectors a clear identity footprint for the print. Card subtype classification is Basic.
Attack names are not present in the current metadata snapshot. Common-tier prints are typically the most accessible entries for set completion.
For Grass Energy in Base, the current reference price is $0.40. Price action is stable over 7 days, moving only 0.0%.
Against its 30-day baseline of $0.38, this card is pricing 4.8% higher. In the past 90 days, observed prices ranged from $0.24 to $0.41 (42% spread), a moderate-volatility profile.
This version is categorized as Common.
A wider Grass checklist helps contextualize this specific Grass Energy print. This comparison sample includes 6 alternatives across 6 sets.
Observed alternatives run from $0.13 to $20.90 (15977% spread). The current card sits -93% versus the sampled alternative average of $5.46.
Notable alternatives include Grass Energy #91 (Evolutions) at $0.20, Grass Energy #132 (XY) at $0.85, Grass Energy #283 (Fusion Strike) at $7.40, and Grass Energy #152 (Crown Zenith) at $3.30.
Current valuation lens: The latest week is near flat (0.0%), suggesting consolidation rather than breakout behavior. The 90-day range spans $0.24 to $0.41 (42% spread), which indicates moderate-volatility behavior.
Versus the 30-day average ($0.38), the card is trading 4.8% higher. Graded context points to a substantial premium curve, with PSA 10 at +22465% above raw pricing.
PSA 9 is currently around $49.35, while PSA 10 is $90.26.
