I guess it depends on your ability to manage/focus. The same Cisco CCNP training course (almost to the word) that you can get online from Udemy for $50, costs

I guess it depends on your ability to manage/focus. The same Cisco CCNP training course (almost to the word) that you can get online from Udemy for $50, costs $6200 in an 11 day onsite format with Unitek. There's a reason why Unitek continues to sell out their classes - and it's not because companies (which is who mostly pays for these classes) don't know about the video courses, but because they realized spending $6200 and having their employee 100% focused for 11 days on learning about network engineering has real value. Presumably, the same thing applies to going to WWDC - you go there for the 100% focus, and you also go to (re)establish relationship, and for the social events.