I agree with Lenny. Under $2k is a good price point to shoot for, although that will only buy you a mid price mt. or road bike without a motor.
Getting to that price point is not easy or else it would be the norm rather than the exception. At least for sale in retail shops.
However by the time a real bike company, that has brick and mortar dealers, bikes get to the customer there are upcharges, and fair ones too I might add, that the CSF campaigns don't have to deal with. Basically what is happening is that these campaigns cut out the middle man, like Crazy Lenny ( who i don't think is really crazy).
I alluded to this in another post in that the success and popularity of e bikes in the EU has matured based on shops selling and servicing the brands that they carry and the brands in turn support the shops with quality equipment, warranties and parts to service the warranties. This model is proven and although the prices seem high compared to the CSF model you get a more secure purchase I feel.
The EU bikes that are coming here are a result of the more mature market and their pricing reflects that. The systems they use are well developed and backed by the support of not only the bike manufacturers but the e component manufacturers as well. For instance Bosch would not even allow bike companies here to sell their mid drives in the US until they had a plan in place to be able to service their product.
Perhaps companies like Wave will be able to grow from their success at CSF but they will be destined to always have to sell Alibaba type bikes online direct. Not a bad model for them but not always the best for the end consumer. Especially if there are any warranty issues. Really low budget offerings like the Sondors have no hope of surviving past their initial offering, if they can even survive that. But the companies like the ones listed in the sponsor header below will carry on because. although they charge more up front for their products, they are better equipped to service the back end of their sales.