Voltorb is card #21 of 108 in Roaring Skies (2015), a Common illustrated by Suwama Chiaki. At about $0.42 it is the #92 most valuable card in the set. In a Roaring Skies booster it turns up about once every 5 packs. It is one of 40 Voltorb cards printed so far.
1999Base Set
2003Skyridge
2007Secret Wonders
2012Boundaries Crossed
2015Roaring Skies
2016Evolutions
2019Hidden Fates
2023151

















See the full Roaring Skies card list
An ungraded Voltorb from Roaring Skies sells for about $0.42. A PSA 10 is worth more, roughly $2.10 by our estimate, and a PSA 9 around $0.97.
It is a Common, and it shows up about once every 5 Roaring Skies packs.
Suwama Chiaki drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Roaring Skies 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.