The 3880 uses only one size ink cartridges - 80ml. I have never seen the complete set of inks sold as a single package, they are only available individually. I always leave the cartridges in the printer. If you are going to leave the print idle for an extended period of time you should remove each cartridge and give them a gentle shake just in case the pigment particles have settled. Cartridges don't clog the print head nozzles do.
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