Not necessary, but it is entirely up to you to decide whether to buy or not. Some buy because of a relationship with the seller, some buy because of the brands, and some buy because they are a member of the company.
Don’t get me wrong, there are certain MLM company do sell good water system, with good looking designs.
But when you invest on any water system, your primary needs are to have a healthy lifestyle, not the looks of the system or the brands.
For instant, R.O. (Reverse Osmosis) system is R.O. system. A membrane with 0.001 micron or less is used to trap any sediments, particle, minerals, & elements in the water to produce clean drinking water. So if the membrane sized is fixed at 0.001, brands is not in the picture. Membrane is the factor and not the brands or the beautiful system casing.
The same, water ionizer is water ionizer. They produce Alkaline ionized water and Acidic ionized water “period”.
In the market people claimed their system are 3 plates, 5 plates, 7 plates, even 9 plate electrode to electrolysis the water. Of cause the more plates or bigger plates are better because more surface of contact when the water flow through during electrolysis. This will produce faster ionized water. But the effects of the water are not much different at all.
As for the ORP (oxidation reduction potential), doesn’t mean the higher the better. Our biological reaction does not work that way. My opinion is “not how strong the ionized water, but how often you consume the water daily makes the difference”.
But for that, you are usually charge higher price than market.
As the name MLM (Multi-Level Marketing) suggested, it is a marketing strategy in which the sales force is compensated not only for sales they generate, but also for the sales of the other salespeople that they recruit. This recruited sales force is referred to as the participant's "downline", and can provide multiple levels of compensation.
Which means you are paying commission for a lot of people at once. And an ideal mark-up rate in network marketing will be a 1:6 of the product cost price.
However, these are all my personal views without prejudice, and you are advised to make up your own mind.