It is very easy. I used to have a similar amount, but have since sold half of it.
Here's part of the collection + me before I started selling.. And that picture's not even including the Amigas I had/still have.
http://www.cbmgallery.com/pictures/00013.shtmlThey were really cheap back in the mid 90s, you could go to any thrift store and pick them up for the equivalent of a couple of euro. Also I was given lots of hardware as fame started to grow.. The local newspaper got tipped off and they made an article about my collection, then I started getting phone calls from ppl who wanted to get rid of their HW.
And the inevitable "why": I wanted to have a "complete collection", unfortunately some peripherals were only available when bought with a full kit, also I soon started to notice that no two old commodore computers are alike, there were always subtle differences that made them unique.
Then I lost my storage space and had to sell a lot of them, and I now plan on selling some more. No point in having a bunch of "different" computers that all do the exact same thing.. I guess I just grew out of it a bit. Still love C= and Amiga, but no longer as an obsessive collector.