However, in the earlier sets of The Pokemon TCG, pack weighing was definitely the best way to get valuable holographic cards. With the introduction of Pokemon Code Cards, as well has reverse holos, golden pokemon cards, shiny cards, and others, it is becoming harder and harder to find packs with valuable cards. Many of the newer series packs are pretty difficult to weigh due to the high variance of weight each pack can have. Weighing Pokemon packs are a thing of the past.