Quoted from Pdxmonkey:How much are these?
What is the difference between using the LED OCD board and premium led bulbs (ghostbuster)?
Im a huge fan. I think they are around $150. I don't remember the exact number but he does them in small batches so they aren't always available.
They basically make it so you dont need premium LEDs at all, they eliminate flicker and allow you to custom set brightness of each bulb and create a fading effect instead of the flickering you get with LEDs when they try to fade.