I don't know anything specifically about the Jason Otter camp but this is my experience with basketball camps over the past 20+ years of coaching basketball:
The big name camps are recruiting tools for division I teams. They are too big for most kids to really get good instruction and they tend to work with the best of the best. You pay big bucks for these camps and they are not worth the price. The kids like them because they usually have some popular college athletes that come in, say hi to the kids and leave.
Most Division III schools have the most worthwhile camps. Yes, they are recruiting tools for them too BUT you will get good instruction and the camp sizes are very reasonable. If you have a good division III basketball team in your area, that is the way to go.
Most high school coaches run camps as well. If you have a successful high school program, these camps are usually very reasonable and usually focus on fundamentals. They are also worthwhile IF you have a good coach. If your high school team is 1-17, not worth the money to go.