It's only "high tech" to the aforementioned cavemen. To everyone else it's a 707 you can't even get spare tires for any more, equipped with some truly obsolete technology aboard. I mean it has a mechanical waveguide for crying out loud.

> equipped with some truly obsolete technology aboard.

So I guess the US won't have any issues replacing it at a cheaper cost (as far as I understood that one cost $500 million, give or take).

The prototype E-7 cost $2 billion. It's a 737 with some radios.

"On 22 March 2019, the UK Defence Secretary announced a $1.98 billion contract to purchase five Boeing E-7 Wedgetails"

Prototype price isn't really that meaningful

(Also it's a 767 not a 737, that was the E-3 I think.)

You must be thinking of a different boondoggle, the E-767, which is the obsolete radar package from the E-3 bolted to a 767. The E-7 is a 737.

Ah right, it's a bit confusing between the bunch of these.

Nonetheless the price tag was only $400M/ea E-7 for the UK in 2019 (usual later price shenanigans not included)