Think very carefully.
I absolutely loathe mine and would never have another.
Mine costs about £120 a month to run (two ovens) and £250 a year to service.
I hate cooking on it. It is OK for roasts / casseroles / baked potatoes etc but I find making things like cake a nightmare. I am constantly having to faff around with cold sheets etc to try and get the heat right and often end up with burnt edges.
The minute you lift the lid to use a hotplate the heat drops both on the hotplate and in the oven. That means I can never sear meat or fish properly and even things like pancakes are very hit & miss.
I used to be a reasonably good cook, now I avoid cooking. I have also stopped entertaining simply because I have no control over my ability to produce a meal at a reasonable time.
I even went to Aga cookery lessons, thinking it was me. Everyone else there felt the same.
Other downsides are the fact that my Kitchen is unbearable in Summer (I have nowhere else to put a secondary cooker) and the estimate to remove it was ridiculous. I needed to have the Aga removed, the concrete slad broken out, the kitchen floor redone and find a replacement cooker to fit into a non standard size hole - £4k +
The only upside I can think of is that it does look pretty and dries the clothes.
Hate it, hate it, hate it !!!