A little gripe
I believe most/all Gem Store armors come with this description:
“Contains a single-use armor skin for xxxx helm, coat, legs, boots, shoulders and gloves.
— In-game description
Remember, Transmutation Charges are fairly easy to come by, free of charge, in-game.
http://wiki.guildwars2.com/wiki/Transmutation_Charge_%28item%29