Red Rocks Car Service

What are the other options?

Parking is free for most shows and included with your ticket. Lots open two hours before door time and are first-come, first-served.
Traffic Control directs you to available spaces. Upper lots are closer to the amphitheater; and fill very early. Lower lots require a long uphill walk to the venue. On busy nights, there is a high chance you might end up having to park on the side of the road if allowed at all.
After the show you deal with finding your vehicle, exit traffic, walking back to your car in the dark, and one person needs to be the designated driver.

Average roundtrip cost for two people from Denver: varies

Getting to the venue is usually straightforward. After the show, it is a different story.
Vehicle entrance to the park closes at 8.30PM - all pick-ups are directed to the Jurassic Lot (past Entrance 2 off Highway 93). You must walk downhill for about 20 minutes, commonly via the Will Call Trail, through post-concert crowds and vehicle traffic.
Wait times of 20-45+ minutes and significant surge pricing are common.

Average roundtrip cost for two people from Denver: $150-$200

Some private companies operate roundtrip shuttles from various Denver locations. These usually drop off and pick up at or near the Top Circle or Upper North Lot.
The limitation is the fixed schedule and pre-arranged pick-up points: You need to picked up and dropped off from specific spots, when the shuttle arrives and leaves, not when you want to.
You share the vehicle with a group of strangers.

Average roundtrip cost for two people from Denver: $130-$150

All the benefits that come with a private car service: door to door, private ride, ready when you are post-show.
However; most charge 'hourly' - the meter starts running the moment you get in the car, and keeps running until you are back home.
Most limousine companies have large fleets for which they need to make up the costs for.
There may be additional fees such as standard gratuity, fuel surcharges, etc.

Average roundtrip cost for two people from Denver: $500-$700