Depends on where you are, of course. JET 6" at Menards for $375, IIRC.
I've got one, works well. I do not understand why people say you can't do
8' on a 4' table. Used to do the odd 8' board on Rocky, my 4"x30" Rockwell.
Wasn't easy, but if you realize that the joining is done over the knives,
the rest is only support, you don't waste effort where it's not required.
On the 6" I can do 100" no problem.