That's about as good as you can expect at that price range. Most manufacturers start laptops at around $400 new, so the pickings at this point are slim. Good idea to look at refurbished.
I did find a couple new Acer laptops in your price range:
15.6 inch and
14 inch, for $328/$330, respectively. They're pretty much identical except the screen size and weight. They have better graphics, but the processors are roughly half the speed of the Toshiba's processor. They should use less power, though, so the battery life is probably better. And you'd get a one year warranty instead of 90 days, which could be useful as the reliability in this price range isn't very good. Acer's a bit worse than Toshiba in reliability, but I reckon four times the warranty cancels that out.
You won't be able to find an Apple, Sony, or Lenovo in that price range unless it's several years old and used, so I wouldn't bother looking for them. The Dell Outlet occasionally has laptops in that price range; what I found there tonight was not as good a deal spec-wise as the Toshiba you found, but on the other hand they give 1 year warranty on their refurbs instead of 90 days. There may be something else out there, too, but I can't think of any more likely models off the top of my head.