Right now im at 200 users with an RPU of 1.75$. What do you guys use as a metric?
1000+ users is a good indication of your RPU. Even then, I still see days when it will be plus/minus 15c.
I have no set rule, you get a feeling for stability. I mean if you got those 200 users within a few hours I would not call it steady yet. If you got those 200 users over 2 days then it would be a bit more stabile.
I don't think you are at risk of going below $1. But it might dip down to 1.20 or go a few cent higher even.
If I was hitting $1.10-$1.20 I would use $1 as a metric to give myself a buffer if anything decides to decline. For you I would use 1.50 ish as my metric.
These users were accured over the course of 7 days. So i think its pretty steady although not sure.