It's just that most large format lenses are actually very good. The lens itself will never wear out (if properly cared for), but the shutter will sooner or later fail. It can be repaired, but will eventually be completely worn out.
So, personally, when I have been buying lenses, I have paid particular attention to the shutter, to minimize the risk of having them break down while I own them.
Trond
Ah, I see. I get your point. I asked about possible issues with the lens itself, but I am concerned about shutters too. I am surprised that more vendors don't mention the accuracy of the shutter, but I guess most people don't test them. One of the first things I ask a seller is whether or not the shutter is accurate. If they don't know, I pass on it because, as we know, a good CLA can add $100 to the cost of a lens. In my case, since I send my lenses to the US, that $100 increases by at least 50% because of the current exchange rate and shipping. I am going to try a new guy in Montreal soon and that will save me quite a bit.
Most of my shutters are older: either Synchro Compur or Universal, and as long as I stay on top of them, they work just fine.
So, you are quite right. There isn't much point in finding a good deal on a lens if the shutter needs a lot of repair.