if there is no major dings, or warps I wouldnt worry about it. The edges dont need to be sharp like a knife, just smooth, so if there is roughness on the edges just polish the edges with wet or dry paper or a smooth file.
best bet is find out what pitch it is and find one on ebay cheap as a spare.
or....if you dont have a tacho fitted see what wide open throttle rpm you are getting, you may have more to gain in terms of economy and performance by runing a different pitch?
can you post pictures of the damage?
I am usually not as green as i am cabbage looking.