What are the difference between OEM, Re-manufactured and Compatible printer cartridges?

OEM Cartridges:

When you are looking for “Genuine, Original branded” cartridges, means you are referring to the OEM. OEM stand for “Original Equipment Manufacturer” or in other words cartridges made by the same company as your printer maker. Unless there is a specific offer, these tend to be much more expensive than compatible cartridges.  

Remanufactured Cartridges:
A remanufactured cartridge is an OEM printing cartridge that has been used but recycled for further use. It like a refurbishing process for the printer cartridge, where factory redirect the printer cartridges and refill the ink or toner powder to meet the printing standard. 

Compatible Cartridges:
Compatible Cartridges or "Generic" cartridges are usually cheaper than the OEMs as they are normally made by specialists in cheap printer ink production. When a cartridge marked as “compatible” it means it will definitely work with the printer they have been made to fit.