Soul Punch in the wallet
While this is a worthwhile class to take, unless you have the 4k to gamble on being liked, you may not get your roi on becoming a trainer. You have to sign a waiver stating there is no guarantee you will get certified and you will not get reimbursed. It won't matter if you can teach the program, if Gloria decides she doesn't like you, maybe you struggle to navigate social politics, you are out. Gloria also does not honor the referral program if you do not make the cut to gain your tuition back. She does now guarantee that new trainers will make back their investment with classes within the first month, but if she would just extend that money-back guarantee to those don't make it, then I would continue to direct people to the training.
I recommend taking the class from a local trainer; those ladies have worked hard to get there. But unless you have 4k in disposable income and nothing better to do with it, then don't hang your hopes on getting a return on this investment.