I've met the woman who first brought those into the UK for them. Mum of old (we lost touch) mate of mine. I well remember him telling me about the old Czech wonder - first I'd ever heard of them. They used to be way cheaper I think - and am pretty sure they probably cost sod all in communist Czechoslovakia.
edit - isn't the heating bit something like a kettle element? When that burns out - surely will - can you get spares easily and economically?
feel free to sing its praises with info on what you do with it/what cook.
Never had to buy spares so cannot answer that.
The one I have is our second one as the first was I thought a bit primitive and then my wife who had Parkinsons and was often a bit confused immersed the lid in water. Even after drying it out it was still not right so got dumped.
I have not tried to make soup in it but virtually everything else can be done tho' I do vary what I do just to add interest. It does good stews, fry ups apart from eggs which it is not good for, heating pizza, baking, grilling, fish particularly mackerel fillets with a coating of curry powder or pesto. Not done that latter for a while as I have not been out fishing for over a year now.
If pushed I could live without a cooker or microwave and just the Remoska. They are very popular with people who have caravans or motorhome/campers and use sites with electricity.