Worth it!!
I had stripes going down the entire length of my car. Probably 6" wide each. A couple weeks ago I pulled the vinyl away with a heatgun, leaving a trail of residue. Since then I tried an eraser wheel, it only moved around the gunk. This stuff works great. I used a timer for 60 seconds, and scraped with an old credit card. I had to do each spot twice with the card, then once with a towel to polish up the job. Considering the car is parked outside and that adhesive residue had been soaking up dead bugs, leaves, etc. Needing 2-3 passes was worth it. The stuff does work quick, and you don't need to use much. I have 1/2 a bottle left, and I probably overapplied heavily (I'm compulsive and wanted to soak the area, which really isn't necessary). It's expensive for a reason, just buy it and don't mess with anything else. Also, the smell is mostly citrus unless you get too close, then you can tell there's some real chemicals in there. Leaves a good polish, but do it outside or in a well ventilated area. I rinsed my car with normal water afterward per manufacturer  recommendations.
Rating: 5 stars