How can I tell if a post on eBay is a scam?

I heard there are a lot of scammers on eBay. Do you think this seller is real or fake?

I can't tell.

http://www.ebay.com/itm/1986-86-Honda-TRX250R-TRX250-R-TRX-250-250R-Stock-Rear-Plastic-Fender-Plastics/362003028892

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