Below are the available bulk discount rates for each individual item when you purchase a certain amount
The Absolute Binary Rotary Encoder is a mechanical encoder capable of rotating a full 360° in both the clockwise and counterclockwise directions. This device can also relate its current position relative to one of sixteen points on the encoder. The Absolute Binary Rotary Encoder is compatible with Parallax and most popular microcontrollers and sample code for the BASIC Stamp 2 and Propeller chip are available.
For more resources please follow this link: http://simplytronics.com/products/ST-00002