If anyone is looking for a plugin that can give npc shopkeeper's unique description for items/ equips-
https://forums.rpgmakerweb.com/index.php?threads/mkr_shopitemmessage-npc-dialogue-shop-addon.108860/ (edit done by mjshi)
https://forums.rpgmakerweb.com/index.php?threads/mkr_shopitemmessage-npc-dialogue-shop-addon.108860/ (edit done by mjshi)