Could go down in history as the most valuable Sun & Moon set.
The market value for 2018 Pokemon Trading Card Game Sun & Moon Ultra Prism Booster Boxes continues to rise. The last ten booster boxes with public revealed sales data sold for an average price of $115.37. This is an increase in value by approximately $8 compared to the previous month.
Ultra Prism, which was released on February 2, 2018, could go down in history as the most valuable Sun & Moon set. Its market value has been increasing because The Pokemon Company International halted production of that set shortly after it launched due to an error on the 120 Cyrus Prism Star card.
It's not clear if The Pokemon Company International will reprint that set with a corrected version of that card. If that happens, the market value will most likely plummet.