We guaranteed our Eco solvent ink on Roland or your money back. Savings are up to 70%.
http://Www.yessolvent.com
Do you guarantee the heads also. Or cover the new equipment warranty once it has been voided by using non-OEM ink?
Ink is a cheap thing to replace. Heads are not.
I used to run a 3rd party ink. I used way more of it than OEM. I know this because I religiously weighed the cartridges before and after every print. This was compared against OEM using the same scale under the same circumstances. There was also less overspray with OEM requiring less maintenance.
You must weigh all the variables and not look at the lure of the cheap price.
The bitterness of cheap quality lingers far longer than the sweetness of perceived savings.