Christian, welcome to APUG

Lenses and shutters do turn up I bought two 75mm Novars at a camera fair early March both in shutters, more recently an 80mm off a Kershaw in a Vario shutter and somewhere I may still have a Triotar in a Compur off a Rolleicord.

So yes you can get what you need and for less than 15 euros if you keep an eye on Ebay try the .co.uk version as well as the Geramn one (login details are identical as is watched items etc).

Ian