I basically specified that I'd make the highest salary and no more than that. It felt like a fair policy at least, it took a lot of guess work out of it. If I wanted to bring someone in at X00K, I had to make X00K.

I started off making significantly less than I did as a dev (~30-50k + I had spent months with 0 salary before raising), within ~2 years I was making a bit more and I capped out around there.