Many of the Mega Evolutions from X/Y/OR/AS are there, and many of them are formidable opponents
When this creature is out, you can pay 3 mana to get a land, which is on rate with Stone Rain, and it only gets better from there
For Competitive EDH As usual, precons are rarely geared for high-end competitive play, and thats especially true of typal decks which dont really pan out in cEDH
In the case of the Pikachu Illustrator, this gap is even more extreme because only one copy has ever received a PSA 10
Carvanha #27Common $0.09 Tapu Koko GX #47Ultra Rare $2.01 Oricorio (14) #14Rare $0.34 Bellsprout #1Common $0.26 Vanillish #34Uncommon $0.14 Gothita #52Common $0.45 Mareanie #39Uncommon $0.15 Helioptile #43Common $0.13 Victreebel #3Rare $0.34 Tentacool #23Common $0.15 M Metagross EX - XY35 #XY35Promo $17.71 M Metagross EX (Shiny) #XY35Promo $66.37 Metagross #11Holo Rare $39.40 Metagross #61Uncommon $0.15 Metagross #2Rare $11.88 Metagross #11Holo Rare $15.50 Metagross #10Holo Rare $22.45 Metagross #7Holo Rare $10.87 Metagross #4Holo Rare $15.25 Metagross #18Rare $2.72
Some of it will be due to condition available on the market, granted, but I cant explain why Island of Wak-Wak is this much