Good places to get Trimmer parts?

I have a Homelite Trimmer UT-20695. It's a kind of older model and I need 1 part for it. The drive connector on mine broke. The part number for it is UP04271 or 98765A and I can find it on Homelite's web site, but it would cost me about $20 after shipping and handling. That sounds a little steep to me. Does anyone know where I could pick one of these up for about $10? Thanks.

I got on Homelites website and found a local service center. They don't keep the parts in stock, but they can order them and that way I don't have to pay the shipping fees. Saves me about $10. Hopefully it's the right part.