Hey!
Sometime the camera company will give you the rated life expectancy but that's is just averaged number. Most cameras these days even lower level ones are likely rated at 100,000+ actuations. That's doesn't mean it will stop working once it reached the rated number. Sure there will be some defected one out there that would fail before that, but that's rare and also this will depend on the environment the camera is used in.
So, that's the last thing I'm worry about when buying a camera. Talk about shutter life expectancy... my Minolta 7xi film SLR that I bought back in 1991 of which was my main camera until about 2001 still work fine, and my 1966 Minolta SRT 101 that I bought a few years back with it's all mechanical shutter still going strong, and I don't know if it ever got CLAed through out those years.
Well, with digital these days people are likely to replace their digital camera long before it reached the rated shutter actuation count anyway

Take care,
Buddy
