| Last time I bought some (couple of years ago) they were only about 8 quid each from Ducati, IIRC.
Worth a phone call to check the price. I'd say, if they ask more than a tenner, time to investigate the code number and buy from a bearing factor. Cheaper than that, why bother?
Depends how near you are to dealer/bearing factor, of course, too. | 
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