Question about Osram Xenarc Classic

The description says packaging unit: 10 pieces, how is that to be understood? With other products it says one or two pieces, so I assume that there are 1 or 2 lamps (xenon bulbs) for the stated price. But if it says 10 pcs. ...how many are there really for 45.- Fr. (I think one xenon bulb = 45.- Fr.) Thanks for an answer!