I agree with pig
the auction does not mention a bearing so I doubt one comes with it (never bought duratrax so no idea in all truth), but for the engines I own I know the pullstarters do not come with the bearings.
OWB's are usually $20ish for most models and could be a pain in the ass to locate one that would fit that pull starter

My idea for how to re-purposing old nitro engines(I actually do this). Take it dump it in a bucket of degreaser and then use a dremel bit to polish it up. You get a very attractive paperweight, and conversation starter.