Japanese XY Break booster box sells for $2k

Price: $2,000 Market Insight: Premium Champion Pack (CP4) is a Japanese XY BREAK–era subset released on April 16, 2016. This set essentially mixes key reprints with a handful of new cards. The top chase cards of this set include M Gengar EX 49 going for around $620 in a PSA 10 and M Mewtwo EX 52 going for $450 in a PSA 10.