Alolan Diglett is card #78 of 156 in Ultra Prism (2018), a Common illustrated by Naoyo Kimura. At about $0.57 it is the #112 most valuable card in the set. In an Ultra Prism booster it turns up about once every 8 packs. It is one of 29 Diglett cards printed so far.
1999Base Set
2003Skyridge
2006Crystal Guardians
2010HS—Triumphant
2016Fates Collide
2018Ultra Prism
2019Unbroken Bonds
2021Chilling Reign

















See the full Ultra Prism card list
An ungraded Alolan Diglett from Ultra Prism sells for about $0.57. A PSA 10 is worth more, roughly $2.85 by our estimate, and a PSA 9 around $1.31.
It is a Common, and it shows up about once every 8 Ultra Prism packs.
Naoyo Kimura drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Ultra Prism 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.