I would agree with you that Shimano tends to wear much quicker than Campy. However, if you replace your chain every 1200-1500 miles then generally you can replace your cassette every other time. In the long run, you save quite a bit of money because the cassettes are much more expensive than the chains.(especially Record, although there is nothing better in my eyes

On non indexed bikes, there is very little stress on the chain/freewheel so they seem to last for many years. I quess one could say that they aren't as user friendly as the indexed systems... but there are arguments to both.

Anyway, sorry for the hijack... hope your brother finds another bike!