As far as I know, you can still get turn signal lenses from Ducati - you might have to wait a month or so, but last time I bought one (last season) it was $5 and I got charged $7 to have it shipped.
Somebody just paid $38 for one plus another $8 to ship it .
Ouch.
Pays to shop around, that's for sure; but hey - more power to the guy selling it. I guess something's value is not necessarily what its worth is; because it was apparently worth it to somebody to pay $46 for a $5 lens ...
Ebay, where suckers are frequently and expediently relieved of their finances.