After market starter motors

I need a new starter for my 1993 200 hp yamaha. I looked them up online and they are between $325- $400 for the units from Yamaha sites.I was able to find some after market units for $150 delivered with a 1year warranty. It seems to me its worth trying. I could buy almost 3 units for the price of 1. Does anybody have any experience with these after market units or any horror stories. Thanks