Cameron Centre is about 15 minutes down the road from me. I used to go to the swap meet there, but stopped going about 10 years ago due to several tables set up with people flogging black market cell phone cases.
Now some of those cell phone cases are on the "used" tables.
I've been impressed the last couple of years at how many younger people come out.
And somehow, all the older people haven't left (sometimes with exactly the same stuff).*
There is always lots of stuff that is over-priced, but usually I can find something interesting to at least look at. As an example, I had never actually seen any of the Rollie 3000 series system cameras and lenses before I saw one there.
The people with tables definitely tend to take advantage of first access to everything.