Counteroffers in the current market?

Finally, after 7 months, I've received an offer. Knowing how horrible things are right now for the job seekers, how many people are still making counteroffers? Is it still normal/expected or is it more of a risky thing to do now? What I received was already towards the top-end of the range they gave me, so I know I don't have a ton of room to work with, though something like a sign-on bonus would be nice.