Ask HN: How Much Is Oncall Worth to You?

At my current job I'm in an oncall rotation. Like most companies there is no compensation for this time.

I've been interviewing for a new job and some of them say I would not have to do any oncall rotation (I'll get that in writing if I accept the job) where as others do have oncall rotations.

How much (if anything) would you value not having to participate in oncall rotation?

Let's say for example your manager said you could be relieved of this duty but you'd have to take a pay cut. How much of a pay cut would you accept?