There are some companies out there providing bespoke solutions for buyers wanting a near off the shelf kind of classic EV, although the lead time I'm sure will be at least a couple of months.
Here is a list of a few I have found so far:
Lunaz are very high end selling bespoke Bentley, Jaguar, Rolls Royce and Rang Rover classics. There is no advertised price, I hear the prices are north of £150k.
Lane Cars
Selling an MG B 21 Plate brand new for £108,000 As seen on Late Break show and James May review
Retro Electric
Selling a classic Beetle for £47000 Click the link for the full Specifications
https//retroelectrics.co.uk
Swindon Powertrain
They sell a Classic Mini EV which is, according to Johnny from the Late Brake Show, £79k for Sourcing and building of the car. Your choice restored to your spec interior and exterior with an EV powertrain. https://swind.life/products/cmk/
Many of the EV conversion companies also have cars that they have converted that are for sale. For example Matrix EV and Electrogenic. Give them a call as they have the odd project for sale. Their details are on the the EV conversion company page.