Stayed here back in May. We paid $10, not too bad although a lot of BLM camping is free. Apparently the $10 is charged May 1st - October 31st, according to the website.
It is nestled against the Colorado River in this cool little valley not too far from the town of Kremmling. The campground itself wasn't that great, but the area was pretty relaxing. You can see in the photos that the weather changed rather quickly, which I think can be cool although your mileage may vary. There's something about being in a dry tent during a rainstorm that makes me very happy.
For a last-minute find after a long day of driving, this place fit the bill.