Right now the nova dreamer is obsceenly priced at $500.00 dollars in the US and $700.00 in europe.
The nova dreamer is supposed to send you cues while you are in REM sleep. ( hopefully flashing lights) but how the lights are incorporated into the dream varies from person to person. Some people report seeing things like fireworks or lighting while others say the cues are more subtle like colors being brighter than normal. Right now the nova dreamer is obscenely priced at $500.00 dollars in the US and $700.00 in Europe. Of course there is no guarantee that it will work for you. Like r3m0t said, with a little creativity and a cheep timer you can get the same effects. I would probably buy the rem dreamer at $120.00 to help get me through dry spells.
If you want you can check it out here: lucidity.com