Hi Barry,
I've bought a few things off them, and none have been grey imports.
However, my experience has been a little mixed, depending on which brother you deal with.
I bought my D300, D80 and girlfriends D50 with 2 lenses off them, and wanted some extension tubes and negotiated a deal for a slight reduction in price due to buying 2 cameras at once. Unfortunately, the extension tubes were out of stock so I had to go back a week later where I dealt with a different guy in the shop who pretty much insulted me regarding the previously agreed price, in front of other customers as well.
Suffice it to say I wasn't a very happy customer!!
Paul C