Go to a Goodwill or other Thrift store and you can pick up an inkjet for about $5us.
That shouldn't break the bank.
Look for brands that have the print heads as part of the ink cartridge.
I may be wrong, but I think Epson has the heads separate from the ink.. If so, the heads are probably cemented shut with the old ink.
Units like lexmark have the heads in the replacement cartridge, so a junk store printer can work as new with a ink replacement.
More importantly, see if you can get a "refillable" cartridge with heads.
You can then practice with that before spending $99 on a CIS.
The guy who talked about his DIY direct-to-plate printer used silk-screening inks, thinned and fed into the printhead via CIS.
He used a UV Curing light that flash cured the silk-screening ink as the printer printed. This allowed for thin traces, and kept the ink from "running"
I have not been a part of the Silk Screeners Club for a few years, so I have no idea if the design still works, or has been upgraded, or may be online.
It would be quite a revolutionary breakthrough for cheap diy home PCBing.