Hi,
The each price refers to the individual item.
For example, with these
baroque crystal pendants, the clear crystal is 99 cents each if you purchase just one, or 85 cents each if you purchase a tray of 36 pieces, or 78 cents each if you purchase 72 pieces (2 trays).
Most of the crystal pendants have a price break at one full tray. Also, Swarovski's trays are normally the same size from product to product, so it can be helpful to know how many to order to get a full tray, so that you know your stock will stack nicely.