Every printing we track, with today's reference value. Cards someone is selling show the lowest price.
124 cards

Mareep
HeartGold SoulSilver #73/123

Marill
HeartGold SoulSilver #74/123

Meowth
HeartGold SoulSilver #75/123

Paras
HeartGold SoulSilver #76/123

Phanpy
HeartGold SoulSilver #77/123

Pikachu
HeartGold SoulSilver #78/123

Sandshrew
HeartGold SoulSilver #79/123

Sentret
HeartGold SoulSilver #80/123

Slowpoke
HeartGold SoulSilver #81/123

Snubbull
HeartGold SoulSilver #82/123

Spinarak
HeartGold SoulSilver #83/123

Staryu
HeartGold SoulSilver #84/123

Sunkern
HeartGold SoulSilver #85/123

Totodile
HeartGold SoulSilver #86/123

Vulpix
HeartGold SoulSilver #87/123

Wooper
HeartGold SoulSilver #88/123

Bill
HeartGold SoulSilver #89/123

Copycat
HeartGold SoulSilver #90/123

Energy Switch
HeartGold SoulSilver #91/123

Fisherman
HeartGold SoulSilver #92/123

Full Heal
HeartGold SoulSilver #93/123

Moomoo Milk
HeartGold SoulSilver #94/123

Poke Ball
HeartGold SoulSilver #95/123

Pokegear 3.0
HeartGold SoulSilver #96/123

Pokemon Collector
HeartGold SoulSilver #97/123

Pokemon Communication
HeartGold SoulSilver #98/123

Pokemon Reversal
HeartGold SoulSilver #99/123

Professor Elm's Training Method
HeartGold SoulSilver #100/123

Professor Oak's New Theory
HeartGold SoulSilver #101/123

Switch
HeartGold SoulSilver #102/123

Double Colorless Energy
HeartGold SoulSilver #103/123

Rainbow Energy
HeartGold SoulSilver #104/123

Ampharos (Prime)
HeartGold SoulSilver #105/123

Blissey (Prime)
HeartGold SoulSilver #106/123

Donphan (Prime)
HeartGold SoulSilver #107/123

Feraligatr (Prime)
HeartGold SoulSilver #108/123