Hmmm well I am a tight git and don`t have any money at the moment but if I was financially inclined again these are the prices that I would ideally pay and would try to. Hope your not too disappointed with my answer, for me I rather spend more money on a newer Amiga as a lot of the hardware is now just too old and won`t last much longer.
Cheers,
Timo
Picasso II card: £30.00
Picasso IV card: £45.00
Retina Z II card: £30.00
Retina Z III card: £45.00
BVision card: £45.00
Amiga PPC card (040 no scsi with FPU): £100.00
Amiga 1260 card (Blizzard): £80.00
Amiga 2000 (just the computer complete, no extra cards): £40.00
Amiga 4000 ()just the computer complete, no extra cards): £100-200.00
Cybervision 64 card: £50.00
Cybervision 3D card: £60.00
Warp Engine card: £100.00
Blizzard 1230 card with copro & scsi add on: £50.00
Flickerfixer/Scandoubler external: £50.00