ProgRama is a high end rebuilder (remanufacturer) of speciality German auto electronic parts (cruise control amp., climate controls, vac. pumps, etc.) That's why you see a core charge for their pump; it's a rebuild (although they are well known for quality work on both "CC" amps.). The Bosch pump is new. Ya pays yer money and ya makes yer cherce.
The Golden Rule
1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later)