Nike Lunar Hyper Low SUCK ... you don't want them even if they are available.
They tear after a few wears. For the past two years Nike has been making cheaper sneakers, with mesh and plastic to make them "lighter" while charging the same price or increasing. But losing any kind of durability that leather used to afford consumers.
But to answer your specific question, the Nike Lunar Lows I don't think are in production anymore. The next low on the Nike market will be the Hyperdunk 2012 low. I will probably get a pair for hoopin. I love low tops.
I just recently copped a damn near brand new pair of Adidas Gil Zero Low. Which were some of the most comfy shoes I've played in ever.