@MojangSupport my son says he bought the "car builder" world template, but it showed as locked and still purchasable on the marketplace. It's there somewhere we can see a list of his minecoin spending to know for sure whether he's bought it or not? (Bedrock on PC)
For information and help with the Marketplace, please see our article at https://help.minecraft.net/hc/en-us/articles/360035130471-Minecraft-Marketplace-Issues …. ^JR