Are you looking for wooden practice weapons, or steel? Contact or no contact? Western or Eastern style?
As for price, well, quality costs... I recently purchased a Purpleheart longsword waster after handling another guy's. It's awesome for forms and contact sparring - almost indestructable, and a good value for ~$80, including shipping. I've also seen a nice Arms and Armor steel blunt - *very* nice piece, used by Christian Tobler for his Lichtenauer seminars.
On the Eastern side, you can pick up a decent bokuto almost anywhere. Iaito are pretty standard for forms practice - you can pick up a well-rated one from Gichudo on eBay for pretty cheap, but of course they're useless for anything but forms practice.
The problem is that there's no one-stop-shop. You need to know what you're looking for, and then people can start directing you to good values.