There are a bunch of threads regarding IMG camps and the full time program. I've contributed to some of those as both my boys did camps and later on were in the full time program.
IMG has had some great instructors (e.g., Edgar Caceres, Kevin Sharp) and some not so great.
The cost is off the charts for the benefit received, in my opinion. But many folks are looking for Summer camps and have a much higher willingness to pay than I would tolerate now.
If you really want baseball instruction, then you can find it far cheaper and more effective elsewhere. If you're looking to park a kid for 2 weeks, I'd say the same...far cheaper and more effective elsewhere.