Questioning Capacity

I've just bought the original ink. This offer is very tempting, because the original cartridges are offered at a fraction of the normal cost. After 1.5 months and only a small number of printing presses with me later on the assumption that the cartridges have not been fully. I've heard that when you purchase a new printer cartridge contained therein are also not completely filled. So it could be those cartridges. Anyway, I'll distance of another order accept, because it seems to me that is "less end up spending more."