I find it pricey too and I don't think I would buy it since the Nikon system works so well. I have seen ionizers that one can make with a kitchen gas lighter which, with a little bit of work, do the same thing :o)
The trip to Midland went fine except that the sunday air show was cancelled due to rain and fog... Aaaaaaargh ! Fortunately the saturday show was OK :o) I'll wait until I go home to check my pictures properly rather than check them on my MacBook Pro.
I did not have time to check the Midland/Odessa camera shops unfortunately, but I'm now in the Houston/Galveston area until saturday and I have already checked some local camera shops. Very interesting indeed, especially with the Euro being so ridiculously strong these days !... However, I would not buy any major equipment due to guarantee problems, should anything wrong happen. Accessories are the best value, like filters, camera bags, memory cards, etc...
Last but not least: The weather is beautiful here and I'm enjoying every bit of it :o)