Mareep is card #119 of 165 in Expedition Base Set (2002), a Common illustrated by Sumiyoshi Kizuki. At about $50.20 it is the #93 most valuable card in the set. In an Expedition Base Set booster it turns up about once every 9 packs. It is one of 28 Mareep cards printed so far.
2000Neo Genesis
2002Expedition Base Set
2003Aquapolis
2006Dragon Frontiers
2009Platinum
2011Call of Legends
2018Lost Thunder
2021Chilling Reign

















See the full Expedition Base Set card list
An ungraded Mareep from Expedition Base Set sells for about $50.20. A PSA 10 is worth more, roughly $653 by our estimate, and a PSA 9 around $201.
It is a Common, and it shows up about once every 9 Expedition Base Set packs.
Sumiyoshi Kizuki drew the art for this card.
Yes, as a digital simulator. Holobrook lets you open Expedition Base Set 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.