To add a bit of context... whilst I’m not saying that I think the neck is worth it, if you were to look to buy an early 1970s Jazz neck then it’d probably cost around £1000 on the conservative side - as I say, I’m not defending the cost, just giving some context on one of the component parts.
Add the cost of the body, finish, Aguilar p/ups and other hardware and it would probably cost what it’s listed for to put together - and yes, I’m aware that it’s entirely possible to put together a bass of similar/superior quality for less money!!
Also bear in mind that, given the type of bass it is, then it’s also entirely possible that it’s a commission sale where Bass Direct will be taking circa 20%. If it came up for sale on this excellent site for circa £1000-£1250 it wouldn’t be a great surprise (to me, anyroad!) if it were to sell.
As I say, I’m not trying to justify the price (as it’s worth as much as someone is willing to pay for it!) just trying to add some context regarding how much it would cost to put together the same bass, esp. with the cost of a vintage neck included.
And personally, if it were my choice, I wouldn’t be listing it as a Fender either...