Yeah... it's a shame that it is a bit out of the way, and, it doesn't have a huge amount of Transformers compare to Nexus, but not much more than the Parra fair (which has a bigger turn out of TFs fans). But there are still a lot of collectables there (at least, when I was there last March).
Shame about the table cost, but if it is $70 for a whole stall, that could be split up by 4 or 5 people, making it more affordable. Maybe...
If the location wasn't so far out... if a group of toy dealers/fans start showing up at each fair as a regular meet, it might generate other toy dealers and collectors to start showing up as well. Like, there are quite a few people there selling trading cards, so something similar probably happened with them.
Yeah, maybe something else more convenient and cheaper will show up somewhere.