They do charge that, if not more. Keep in mind most all of the river is rugged, inaccessible, and bordered by private (and rightfully protective) land/owners. Additionally, the roads are rough on vehicles, and it is a 2-3 hour drive RT for a drop off/pick up.
A cheaper option might be to visit the Del Norte unit, camp and paddle that stretch for a day or two. It is about a mile hike down to the water from the nearest parking area, so keep that in mind. The Pecos offers more affordable routes/shuttles from my experience.