If you have a completed product then you probably don't need crowd funding.
Just the opposite, "Crowdfunding" only makes sense if you have a completed product; in most cases, a few hundred thousand dollars (in projected goss margin) will not be enough to cover product development and other capital costs (a recent coffee maker and a thin watch).
Even the superfluous, but unique, Sondors yellow-blue plastic box must be $10's of thousands for tooling. No tooling, engineering, or jigs are really needed for a comparable bike to be built, he is doing custom work of his own volition and for no reason whatsoever.
The bike is really an "arbitrage play" between
an existing Chinese consumer product (with millions sold) and the much higher priced US and European counterpart-products.
Today, and in the opposite direction, name-brand luxury goods are being "arbitraged" from the US/Europe to China. eg. Cigarettes or Liquor. "Luxury" consumer products for sale in the domestic Chinese market are higher priced, but they are exactly the same as the identical-luxury-branded product "to be sold only in" US or Europe. The arbitrage in this case works up until the customs agent steps in and confiscates the gray market goods at the port of entry.
There are reasons "why" a difference in price exists between e:bikes for sale in the Chinese and US markets, respectively. Those "market specific elements" present as the shortfall in the Sondors offering, and they were not considered in the business plan because they are costly to provide.
Differentials to one-price.
That is why the product will be incomplete even if delivered.
The arbitrage in the Sondors case works up to the point he has to pay 23% gross sales for marketing, legal fees, product liability insurance, sales tax, testing, battery certification, product support and all the other elements that differentiate US and Chinese markets.
To some extent, Sondors admits this as being the case in his legal response to the lawsuit. If you don't believe me, read it for yourself as he said in paraphrase, "if I pay Agency 2.0 then I might not be able to provide everyone with a bike."
He has either not considered all the business elements he missed, or he is just not concerned with them. I think he is a smart fellow; see Toyjobs, he has been around the block and knows what he is doing. He is a care-free surfer dude kind of guy.
Rad Rover, Pedego, and Big Cat are arbitraging too, but they are all adding value so the product will better conform to the US marketplace, and thus they are adding cost in the process. The margins on ebikes are not that great as one would expect.
The "Crowdfunding" part of the equation is just a marketing pitch. The structure of crowdfunding, also financial, is just a way to give the short end of the stick to the consumer.
The story is really one of finance, labor, and consumer goods arbitrage.