If you can, go in for a later lunch like around 330-ish cause at 4 the price goes up for the supper menu when they bring out the steak. That way you can get in for the cheaper price if you want steak. I dont eat red meat so I've never had it, but heard that it was pretty good.
I think prices vary cause here in CA where they just opened one about 20 minutes from us, the price is $6.99 for dinner and $11.99 for supper. On sundays the price is the same all day long, $11.99 for dinner and supper. On sundays they also have a breakfast buffet, but I've never tried their breakfast. I've heard its good but its hard to beat the Shoneys breakfast bar.