Keg

I am told you can help me. I am an artist and paint in oils and arcrylics. When I produce prints of my paintings, I need to use genuine Epson Inks so that they are up to Art guild standard and do not fade. This proves expensive and someone told me ,I can buy them through yo as refills which keeps the cost down. Is this correct, and if so, how do I order them?

Can you help me. I also have an A3 printer Epson stylus photo 2100