I haven't checked the prices recently. My son went for two months and the discount for the longer program was significant enough to make it an affordable summer. He rented a bedroom from a former college player who owns a condo the next town over, bought a bike for about $25 to use for his daily commute, and bought food from Costco and cooked for himself. Total cost for the summer including cross-country airfare was about $3500--less than what lots of high school parents pay for travel ball in any given summer.
The advantage of attending in person is not just the discipline of doing the full program every day. In fact, if you need other people to motivate you to do the work, you're probably not serious enough about it anyway. For my son, the big advantages of being there were 1) knowing he was doing everything the right way, 2) knowing all the measurements were taken the same way, 3) rubbing shoulders with and picking the brains of similarly motivated players, many of whom were more advanced than he is, and 4) unlimited use of the facility.
He's still doing the program every day. Velocity hasn't come around yet--he is recovering from surgery, so there's no guarantee it ever will. But he says his arm has never felt healthier. He's a big believer in what Kyle teaches.