Hi Rob,
If you cannot find any replacement cartridges, then maybe update to an EcoTank by EPSON.
EcoTanks >
https://www.epson.com.au/products/pr...33&GroupID=113
Try the 1810 or for auto double sided printing > 2850.
Replacement ink bottles. (Cheap as....)
>
https://www.epson.com.au/shoponline/...es.asp?id=6918
I've been using an EcoTank 4750 for years with no probs & I haven't used the 2nd bottle yet. (Came with 2 years supply of ink. eg. 2 bottles of each colour.)
Recommend them.