I do my own tech support, It is not all that difficult, they like you to believe it is!
Been working with a 3rd party ink from Spain for 3 years without any real problems, i changed the head once due to electrical currency problems but no cloghed heads.
The savings with that inks has been around 70% but still cost about 90€/L
But the chinese inks are really low cost, what i am really concerned with is not the machine, it is to produce the right colors, i have been testing around 3 different manufactures and so for non has been able to produce the right colours, which is crap. But i have heard Inkmed is different, i was wondering if someone has any experience of their inks. Even if i need to change my prin head once a month it would still save me loads of money...