You do realize that Brickarms are sold at the train club on the second Saturday of every month. AND you don't have to pay shipping. Right? Also they sell older sets and Brickmania sets and of course it's interesting to see what stuff they have added to their diorama. Bulk bricks are obviously available in large quantity at MOA (I think my record is 1,323 pieces in a $15 cup so far.), so there isn't much of a need for non-lego retailers to be at conventions for us at all.
Just picked up six stahlhelms and 6 mp40s and about 12 assorted weapons this morning there by the way.
Yeah I go to the monthly event down there often. Usually blow about $20 on BrickArms stuff from Brickmania. Last two months I've been pretty busy on the weekends so I haven't made it out. Got some cash built up that I'll likely spend at Kids Fest now.
I gotta get down there next month tho.... before all the new weapon packs are gone =)