In Prontera when I buy any items from npc or vending shop and then warp to any other location, those items disappear. Also when I get back to Prontera my spended zeny is back. It happend around half an hour ago.(Some people say that items that stored in kafra do not disappear but zeny still returns)
Spoiler Bought flowers (NPC)
Spoiler Bought cursed water (vendor)
Spoiler Warped to Geffen
Spoiler Zeny is back