Buying second hand high volume business printer / copiers on eBay

I was looking at buying a machine like this for my home office:

http://www.ebay.co.uk/itm/Konica-Mi...487850?hash=item2a7714f22a:g:y3AAAOSwKOJYId4v

I like the functionality that the device offers but my concern is maintenance eg drum and fuser unit replacement.