" But the sellers need to pay for their spaces too."
I understand that but no need to pay for their table with just one sale. At the last Tipton show I heard one guy say " with just one handgun sale I can pay for the whole weekend here"
at some of the smaller shows tables are so cheap one sale will pay for a table. i checked a table at the central indiana show in richmond and i think it was 20 bucks so i could easily see one sale paying for the weekend.
the 1500 the tables are 90 apeice so id say it takes more than one