so basically, i got an elytra, and enchanted it with unbreaking2i, as that was all i had. i then got an unbreaking 3 and mending book from fishing, and then i go to put it on the elytra and it says its too expensive. i had only repaired in once, and now i cant get an unbreaking 3 and mending elytra. it was my only elytra, so i couldnt put it on another one, but either way, its annoying and needs to be fixed