Car meets are to meet people (other enthusiasts) yet I have found that it's difficult to make conversations with such "enthusiasts" at meets. When I get asked the same question, I break into a larger conversation such as "Are you looking into getting new wheels"? and take it from there. Don't ever judge anybody because you really don't know anything about them.
Also, when I find a great deal on something, I'm quick to let people know what, where and how much, because I share like that.