People up there are saying spend money on Cameras, for me it's the other way round, Lenses, Lenses, Lenses. The camera bodies are now cheap and cheerful but the lenses can be the expensive side of our hobby, I'm an Olympus 4/3 user and some of my middle of the road lenses even when buying them second hand were over £400.
But some of the kit lenses are good and are available relatively cheaply.
Although I recently sold a Mk1 1992 Canon 50mm f1.8 lens on ebay and it sold for 1.5 times the price of the same lens in Mk2 is available for on EBay!
Most cameras do have a shutter count in their software, all Olympus ones do and even the lowly cameras have around a 50,000 operations shutter life. I bought an E3 which was a little battered but has only done 14,000 operations it's now done another 10,000 in the 12 months I've owned it.