Varies hugely.

This year i spent about 350 € i think in total, mostly on x-wing miniatures (well 250 to be exact) and a copy of memoir, some ringwraiths and paints/cardsleeves etc.

I did have a 450 € blowout around crisis in november though 

And last year on pendraken stuff, well i didn't count, here's the picture 



And that's without the acw and buildings etc etc...

Starting my magazine and overall this year totals 200 - 250 pounds. There is more afoot and paints, brushes etc. are not even included.
Which brings me about a PM to the other half of the new boss at minibits.... 

About £25 per month not including books.

I prefer to small frequent orders to big ones and I generally wait until I've run out of things to paint before ordering more, the postage may be a bit higher but the shock to the bank account seems less and I don't amass a depressing 'lead mountain'.