The 10 most expensive pokemon cards of BREAKthrough (Chase cards)

Released on November 4, 2015, BREAKthrough is the eighth main expansion of the XY series and the very first to introduce the Pokémon BREAK mechanic — gold-bordered Evolution cards that build on a Pokémon's existing strengths with new attacks and higher HP. The set features 164 cards in English with Mega Mewtwo X-EX, Mega Mewtwo Y-EX, and Zoroark BREAK headlining the expansion, alongside a theme of twin worlds — one of technology and one of nature. As the debut of BREAK Evolution and one of the largest XY-era sets, BREAKthrough marked a significant mechanical turning point for the Pokémon TCG. Here are the 10 most expensive cards from this expansion.