Yes there are. It depends on what kind of quality you are willing to put up with.
Stealth blades at helidirect are 2 pairs for $26. With quality, it's a hit or miss. Finish quality is fair. Most of the time, they require lots of packing tape for balancing. But my most recent 2 pairs actually didn't require any tape. I was quite surprised. These blades are kind of soft though. For Sport flying and beginners, they are the best choice if you're on a budget.
Pro 3D. These are almost identical to the Stealth blades. They go for $25 at amain hobbies.
Chameleon. I never tried these. But they are only $30. Worth a try. http://www.cermark.com/products/CHA...otor-blade.html
Mavrikk G5 Pro. These are wide chord blades. Excellent quality. Balance and CG perfect. Very fast and smooth but consume more power. These are $39 at amain hobbies or heliproz.
There are other blades but more expensive like CY Radix $65, Edge $60, SAB 3D $55, Torsion $53, MS Composite $52.