I've used Rockets for years. My first one got jammed up in a tree and I had to cut the line and leave the Rocket...I mourned for weeks
I poked a hole in another one which was my fault. A handstitch and two thin layers of marine Goop and it is still going strong. Like Silky handsaws, you pay more the first time you buy a Rocket but you don't have to replace them very often. That's how value is determined, along with performance.
My wish was that the Rocket came in a heavier version. In the tall trees the 12oz bag isn't enough to pull down the throwline because of friction and the weight of the throwline. That forces me to use second-string bags.