It's a bit odd that all the models from other designers have gone from the Slovakian Minimodels site - but they are still available from the Czech site -
Novinky - minimodel. In the "Archiv" section there is the old version of the site also, and so far as I can see, all the original models are still available there. I have collected them over a number of years, so if there's anything you can't get, PM me and I will probably have it.