Hi Globemast, I don't know anyone who sells MM enamels in our part of the world. You can get RLM colours in the Xtracolour range. I have used them myself and they are good paints to work with. The only downside is that they take a long time to dry completely.
You can get them from Hannants in the UK. Their web address is www.hannants.co.uk
Hope I've been of help,