Like most Pokmon cards, the value of Zapdos depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Aquapolis)
2 - Pocahontas - Peacekeeper (Iconic) The first of two Iconics from the Winterspell expansion, and I can already see why this is going to be a huge chase card for both players and collectors
Especially if you are following theories like the bent corners hack, or the idea that switching up what you pull from will lead to better pulls or god packs
As Flamewar, Streetwise Operative, it gains menace and deathtouch, making it harder to block and as well as more costly to throw creatures in front of it
Pokemon Clefable XY - BREAKpoint Rare Market Price $0.85 $0.14 Median $0.93 Normal $0.85 Reverse Holofoil $2.42 Prices from TCGplayer, updated 11 hours ago
Just make sure to keep them from getting warped