TBH, it's kind of style over substance - you're paying 5K for a (admittedly beautiful) electric oven, that will be more expensive to run that a normal electric oven, with the inconvenience of having to wait a long time to heat up, and not be able to see how the food is coooking.
The other thing is that, unless it is cooking, you won't get any of the 'aga love' from the radiant heat. People will flock towards it and feel disappointed that it is cold.
Having said all that, I'm still tempted...
Consider a Rayburn electric (at 90 cm), Everhot electric and RedFyre electric as alternatives. Rayburn and RedFyre are heat up from scratch ovens, but have 'warm front technology', where for about 0.01 p per hour, the front top surface of the stove is always warm to the touch. Everhot do an economical heat storage stove, which costs about 9 per week to run with economy 7.
I'm in this quandry myself at the moment....