The "Brand Manufacturer" argument is bizarre, simply because most of them (especially below the very best top-of-the-top 'Elite' teams) are made in the same middle-eastern factories, on the same machines, using the same materials. You prefer a Puma, or Adidas, or Nike kit? Chances are that at our level the same factory produces all three and more.
The only real differences are in design and gimmicks (and sometimes the cut, but often that is even left to the 'Elite' teams).
At the very top of the Elite teams, the "manufacturer brand" pays the club and creates bespoke designs. At our level the club have to pay for the kit and the "manufacturer brand" becomes a licensee of that brand and only gives the option of selecting from a set of pre-determined designs and just adding your own colours onto them.
When we were with Puma (it wasn't actually Puma directly, it was Genesis Sports who licensed the Puma brand in the UK) in ~2010, we had to pay ~£13 per shirt (went up if you added things like a collar). Remember the two stripes on the shoulders, etc? They were forced on us by the brand. To make them 'unique' to us all we could do was tweak the design a little... For instance the 'pin stripes' by the broader stripes in our promotion year kit were added by us at the club, the 'Owl' on the silver away kit was added by us. Of course the sponsor logos, Childrens Hospital bear, etc, were added by us. Everything else on those kits were mandated by the brand. We then had to pay for things like freight shipping (choice between air freight for more expensive speedier delivery or sea freight which was lots cheaper but took way longer, etc).
By doing it 'ourselves' we theoretically have a greater control on the design and produce them at a lower cost. How that realistically translates (and what relationship 'Elev8' have in that process), I don't know. But the kit is likely fashioned in the same way and perhaps in the same factories even.