Keith, I like to look at it this way (because it makes the pill easier to swallow); A CLA is a running cost not an aquisition cost. Having to do it early on is not really saving any money, it just brings the service you would have eventually done - forward. It has an added benefit of giving you peace of mind that your meter is accurate and overall the camera is more pleasant use from an earlier date so you're not putting up with any niusances waiting for a severe problem to warrant a CLA.
P.S: I found a good technician in Melbourne that I send my cameras to now because I have not been able to find any in Sydney that were good and didn't try to have their way with you! (found him referred to in another thread here on RFF) Considerably cheaper than sending them abroad and he is very good.
http://nagamicamera.com.au/