I gave up on ink and went to laser jets and toner about 20 yrs ago. Much cheaper.
I am wholly digital, to the point that I don't need to print anything anymore. To the point that if I do need to print (usually something that needs a signature, which is rare these days), I put it on a thumb and get it printed at the UPS store, next time I am running around.
All my utility/vendor bills come by email.
All my invoices print to pdf and are sent by email.
Onsite is paid at the time of service, and usually cash... If credit card, they just go to my site and pay for it there.
All my 'paper' for years backs up on a single 8g thumb.
Mo'bedda