This is not a good idea. Now you will have inconsistent quality x6. Inconsistent lighting, inconsistent backgrounds, inconsistent framing.

Now for the price, you want to buy 6 super cheap cameras, lights, and a background.

Nope.

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The first thing is what do you consider inconsistent quality? If you are using auto mode on your phone... change that to manual. It will be free.

Get one decent tripod and cell holder. $20.

One decent background, probably Formica or some laminated material (Avoid glossy. It needs a more advanced setup). $20

Probably a rotating turntable with remote control. $50

Some lights with 2 softboxes, a boom for an overhead light, and a fill light. $100 or some more robust led lights for $200-$300

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You need to focus on what specific things you have wrong on your images and correct specific things, instead of "inventing" a solution that will most likely cause more problems.

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I did some basic searches on the prices I wrote. Of course, you can explore more in-depth what specific price-quality-function you need.

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P.D. With your setup what you want to economize is time, not quality. Framing for multiple cameras, instead of 1 will also be more time-consuming than the rotating turntable.

But you need to invest some time in learning some basics of product photography. You do not need much to learn. In a couple of hours, if you are consistent you will learn something that will be useful for a lifetime.

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A late addition regarding your comments:

You can find some cheap "action cameras" for the price you want. Besides the fact that the quality will be significantly inferior to a decent camera, they normally come with one fixed super wide-angle lens, so for framing, you need to physically move the camera, and the perspective will not be flattering for the product or you will need to strongly crop the already poor quality image.

The final point that kills the idea of having multiple cameras is the wide range of sizes of the products that you need to photograph. Focus on having one solid setup and you can adapt it for most products.

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And for heavy objects, like the bike framing you could build a heavy-duty manual lazy Suzan, and use the remote controled for smaller objects.

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Also, because of the size of the bigger objects, it is a good idea to invest on more robust light stands. A bigger object needs the lights to be further away, so they need more power and normally they need to be bigger.