Gastly is card #75 of 130 in Base Set 2 (2000), a Common illustrated by Keiji Kinebuchi. At about $0.77 it is the #95 most valuable card in the set. In a Base Set 2 booster it turns up about once every 6 packs. It is one of 35 Gastly cards printed so far.
1999Base Set
2000Gym Challenge
2003Skyridge
2007Diamond & Pearl
2010HS—Triumphant
2016Generations
2020Sword & Shield
2023151

















See the full Base Set 2 card list
An ungraded Gastly from Base Set 2 sells for about $0.77. A PSA 10 is worth more, roughly $10.01 by our estimate, and a PSA 9 around $3.08.
It is a Common, and it shows up about once every 6 Base Set 2 packs.
Keiji Kinebuchi drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Base Set 2 booster packs in your browser with the set's real pull rates and keep what you pull in a digital binder. No real cards, nothing to buy.