I'm selling my black MPC 1000 in good condition maxed out with the following extras:

100GB Hard Drive (Seagate Momentus 5400.3) with 5-year warranty ($100 value)
Akai HDM-10 Hard Drive Adapter Kit ($30 value)
Akai EXM128 128MB RAM Expansion Card ($150 value)
JJ OS 2 Operating System ($90 value, since it requires JJ OS 1 which is $40 and JJ OS 2 which is $50. Both OS 1 and OS 2 have been purchased and installed for this MPC (meaning all future updates are free) and you can dual-boot between both operating systems). JJ OS is an essential upgrade which gives the MPC1000 the features of more expensive MPCs such as MPC2500 and MPC4000. JJ OS 2, for example, adds features like ADSR and key groups.