I'm honestly not a fan of coding bootcamps or short duration courses in terms of cost/benefit.
If money wasn't an issue I would say go for it but since you are paying your own way and brought up the money aspect I'm going to assume that at least some consideration must be taken before dropping $3.5k.
I find that I can honestly absorb much more material and at greater depth by simply reading a book and attempting exercises or small projects myself. Certainly there are some tips & tricks that can be imparted to you through actual instruction that you might not glean right away from self-learning but those things won't be the bulk of the knowledge you have to learn.
These programs remind me of short duration certification bootcamps: expensive and of little substance. You have to be realistic, you are there for 4 days. You are going to learn how to setup the development environment, shown some canned examples that you follow along with illustrating the basics of the accelerometer, photos, and other iPhone basics.
Is that really worth it to you? To me, a serious professional developer would simply sit down with a few of the cocoa/iPhone books and start banging out some chapters on their time off.
So, in my opinion, save yourself some money and spend $90 bucks on some books and take a few days off work.