I brought my first mac about 2 years ago.
This is what I've aquired in that time, what I paid for them, and what I use them for / what happened to them.
Powerbook 15'' 1.5ghz - Brought for £1200 -
main computer - my first Apple buy!
Powermac G3 B+W - Brought for £50 -
RAID5 household media server
iBook G3 700 MHZ - brought for £300 -
backup computer - now on loan to my dad
iBook G4 1.5GHZ - brought for £700 -
girlfriend's computer.
iBook G4 1.5GHZ - borrowed from work while my Powerbook is under repair
PowerPC 8800/50 - Donation - put on garden wall 3 days ago and someone took it off my hands.
Apple CRT monitor 14'' (I think) - donation - Freecycled off to someone a few months ago
Radius vertical CRT monitor - donation - also freecycled off a few months ago.
Powerbook 5300c - non-working scrap donation - will trash it in a few days if no-one takes it.
Non-Mac:
AMD 700mhz PC - learning myth TV backend testbox - will get rid of in a few weeks if Myth doesnt work out for me.
IBM thinkpad 266MHz- £50 -
possible digital photoframe
Dell laptop - broken screen - donation -
possible home webserver
I also used to own 14 PC's several years ago, but got rid of all of them when I got a new girlfriend / moved house