I have not personally used these cartridges (they are Epson Compatible) but I have been pleased with everything else I have bought through Meritline. Maybe someone who has used these cartridges could chime in with how well they work...
I ordered some from Meritline for my Epson 900. The clogged constantly, the colors were terrible, I would never buy anything but cartridges directly from Epson again. My 900 recently died on me, not exactly sure if it was becasue of those cartridges, but I have a strong suspicion it was. Now I'm stuck with this R200 with a billion diffrent ink cartridges, I think it's cheaper to just buy a new printer than a set of replacement cartridges.