Gekko takes charge in this Level 1 Ready-to-Read based on PJ Masks, the hit preschool series airing on Disney Junior! Gekko is tired of being the youngest ... We analyzed the price history for the PJ Masks Gekko Takes Charge with Amazon price historical data. This item is manufactured by Simon Spotlight. It is sold in the category Books. Amazon have it for sale at 3.86 £. We noticed a higest price of 4.02 £ and a lowest price of 3.08 £.