Henry,
I can't see the local guys wanting to come anywhere near to reducing his price by the necessary $635, so I'd be ordering from GGCH asap.
Regarding the moon filter, I use just the standard cheapies at about 15 bucks each, and they work fine. With a moon filter, you're only wanting to cut down on some of the brightness, so you don't need to spend a lot on one.
Cheers
