So, first, welcome to the forum!
Next, that is a darn good price for an Empulse, especially if it's in good shape.
However, you probably know this, but if anything ever goes wrong with the electronics, battery system, or transmission, you're going to be there proud owner of a $3K paperweight. There is literally no factory support anymore and that means no extra parts if anything happens. So, that's the risk you have to consider when deciding to buy.
I would love to own one, but I am not willing to take that risk anymore.