OK, back to the original buildings that started all this. Ive finally managed to get the moulds started and cast up. As they are modular they can be built as the smaller one or larger one and then as many layers can be stacked on top of each other to make the different floors. The ones below are all either one or two layers.
Really happy with how they turned out (even with the slightly rushed paint job).



As some people have shown some interest in these (and as I need to make some of the money back for the printing and the vacuum pump I bought to make the casting better quality). So if anyone is interested I think a fair price is:
Small building = £8
Large building = £10
Extra later for the small building = £7
Extra layer for the large building = £9
Postage to the UK would be £3.50.
And for a bit of a building bundle I was going to say a good start is 3 small buildings, 1 small building with an extra level and 1 large building. So 5 buildings for £40. I know its only a bit of a discount but better than nothing.
Finally (and I thought Id put this in as it would be something that would worry me), although I will only be selling these until I have made the money back for the casting supplies and parts if you get at least £40 worth of buildings then in the future if you want more I will keep all of the moulds and promise to cast more up.l