I can't find one anywhere- there all sold out!! 

Have you checked at a Walgreen's?
I got mine several weeks ago at BB&B and at that time, they were everywhere. The last week when I was out and about, people were grabbing them up like crazy.
Good luck. 

Walmart in Porter had them a couple of weeks ago 

Read some reviews and they were very disappointing. You could hardly see the lights. Gigix4 can you give us your review? 

I think they are just fine. The only thing is that it has to be really dark before they come on - not a "dusk to dawn" thing. It's more of "dark" until ... I have them on a timer to run for 6 hours.
Mine don't come on until around 7:45-8:00. I have them mostly pointed up into the trees and have to say, I think they look great like that. They only have a choice of green only or green and red and I really wanted white but have mine set to green.
So far, I haven't had any problems with them. 

Kroger 59/Northpark had about 10 left an hour or so ago. My daughter bought one yesterday there and it works just great. $40 

I saw them in HEB last week I thought. 

I actually bought 2 since my front yard is pretty wide. So I bought 1 for the east side and 1 for the west side - my house faces north.
The further out you put them, the wider the display.
They are easy to adjust not only distance but also direction of display.

Oh yeah, don't expect a "shower" display unless the wind is blowing enough to move leaves, etc. In other words, they won't look like snow falling. Once they are set, they just light up the direction of display ... if that makes sense. 

I ordered 3 online. They look ok, but additional regular Christmas lights are still needed. I get a lot of people that stop to look at the house. My 18 month old daughter loves them! lol