Hilliard sprockets

#1
I was given a Hilliard kart clutch with the sprocket just chewed clean off of it. I figured it was a good deal but now i see sprockets from $15-19? Seems kind of pricey? I have bought new clutches for $29 that use real springs as opposed to the C shaped springs these use.

Any thoughts on getting one cheaper? Are they all the same other than 10t/41?

Thanks
 
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