A used one. Or maybe call Cameraland, they have deals from time to time and they had a Kowa for about that, but remember you'll still need an eyepiece with those and they can cost as much as the scope itself. For whatever reason though, this one was a better deal on both. I'd call 'em and make sure to tell 'em you're a member here.
Leupold comes up for about that often too, though I think the 60x version costs more than that.
Some other guys with more experience with more different types will chime in shortly, this is a common question on here. I bet if you look back a page or two you'll find pages of information regarding your question.