I have one that I keep in my workshop. Since it's inexpensive, I don't have to worry about anything happening to it like I would my more expensive spotters. I was surprised to find out that the view it gives is about the same as a Bushnell that costs more than twice as much. In fact, I'm a bit p.o.'d now at Bushy because of this.
Like all inexpensive spotters, it gets pretty dim at magnifications above 45x, but I generally don't use it or the Bushy above about 40x anyway. Build quality is good when one considers the price.
The tripod is a piece of junk though. I didn't need it anway, and I gave it to one of the kids belonging to a co-worker.
One other low-priced spotter you might consider looking at is the 50mm from Celestron. You can get one for about $55 shipped from Amazon. They are pretty good as well, and are a bit smaller in size than the Simmons.