You can only pre-order at this time, that's retarded, if they don't have the product and you're giving them money to develop the product, you're funding their company this way, and you don't get dividends, what on earth.
If it's a security deposit then it's justified but it can't exceed 50%, but they want full price, damn it has better be some good 💩, they should've took a loan from the bank using their own credit to develop the product, but they're abusing their credit on you,
@Wendy don't do it.