ummm i think you get it at around lvl 35 from luriel? it should be somewhere around the mid 30s
as for your cash shop items. every fashion and accessory cash shop item has a seal count of 1. if they say "sealing impossible" then you cant trade it every again. its stuck on your character. if it doesnt need seals but says "trading impossible" in red letters then you cant bank share it and its stuck on that character.