[jodrellblank]

It's not so much arguing that it is cheaper, but that there is still rationale for choosing it even though it's more expensive.

Of course it gets more expensive the more you use it - but so does doing it yourself. And not on a nice smooth scale, either.

[zaidf]

There are certainly many cases for using S3 even though it is more expensive. There is nothing wrong with that.

It's just that I have met way too many people who after describing my situation, one of the first things they say is "have you tried S3? shouldn't it be cheaper?"