I got mine from Vintage Vinyl, a record store in NJ.
I guess that it was plenty available after the cons that year, but I think Kirk in that uniform should be one of the figures that's plenty available.
With all those TOS Mirror figures coming out, I just remember I need a Mirror Kirk, which is one of the two figures I don't have from Art Asylum's TOS line.
And, Michael Crawford has a review of Worf, Will, and Thomas Riker on his site. I'm a little disappointed that they're such huge figures, but then again, Worf and Riker were some tall guys.