It kind of depends on your current level of firearms proficiency. I think most people would benifit more from using the money on ammunition to practice with but for me I thought it was pretty good value for the money. When I purchased the discs, I was shooting 200-400 rounds a month over two or three trips to the range and was looking for things to add to my range time. As others have commented, they are not replacement for live instruction.
Most of the instruction is on the first disc and this is the longest disc in the set. Mindset is covered in the second disc and scenarios are demonstrated here. The third disc covers concealment and things associated with carrying on a regular basis and things to be aware of while carrying. The fourth disc contains quick reference drills - very useful, this set is only as good as you try the stuff you learn, and other handgun accessories. The fourth disc also has outtakes which are a lot of fun.
Having a place to shoot where you can draw your handgun, are not restricted to shooting from behind a line and can move around, and being able to set up "cover" will greatly improve what you can use on these discs.
The biggest thing I took away from these discs is that I needed to spend more time at the range but, I enjoyed these discs and would recommend them.