This is your business, so some people just don't work at it, or think they know best.
I have worked with them for over 2 yrs, and seen some people "play" at it. This is a business, and yes, you do need to invest your money into it. Name a business that you don't. If you follow the training, you produce a successful travel agency, but if you don't, and think you know better, you do fail. Most new businesses take 2-5 years to get established. With this, it took us 6 mths before seeing profits worth talking about. You will note those giving bad reviews mostly have done less than a year in the business. And you must question, did they actually work it as a business or a hobby?