Negotiating an offer, is it too late? - 10 months and counting

It is the first offer in 10 months and I do not want to mess it up. I do not usually post, so bear with me. I have a competing interview next week. Did it backfire?

Ask about the range, not a number on its own. It felt more collaborative.

I thanked them and said I was excited but hoped we could talk about the pay. They came back with a bit more.