BQ just found a top seller on eBay selling Lamy 2000 4 colors ballpoint pen for USD58.95 including free shipping to Singapore
Imported from Germany this sleek black beauty contains 4 ink colors: black blue green and red. Its simple elegant design doesn't require a complex mechanism to select the ink color. Rather it's designed to let gravity do the trick. Near the top of the pen are four colored bands which encircle its body one representing each ink color. To select a color simply rotate the pen until the band of the ink color you want is facing upwards. Then click the button at the back of the pen to begin using that color of ink. It's very simple and intuitive.