"You can create any wondrous item whose prerequisites you meet. Enchanting a wondrous item takes one day for each 1,000 gp in its price. To enchant a wondrous item, you must spend 1/25 of the item's price in XP and use up raw materials costing half of this price." In translation, making a wondrous item requires not only raw materials and special skills, but a healthy chunk of your own personal experience/existence.
