DR-55! Oh, Cool!
What its good for? It's good for making cheezy drum noises, that you any way can download on the net as wav files. Four sounds: "bup", "tick", "tjack" and "click".

The first drum machine I ever used. I thought it was easy to use, my friends never got a straight rythm out of it...
Worth? Well, for me I'd say:
Usefulness: <$1
Including cool factor: up to $30
With added nostalgia: maybe $50
Add $20 in usefullness if you have no other way of making cheezy drum sounds.
What they actually SELL for is quite another matter. Look at
a TR-909, that somebody was almost prepared to buy for $2200. (Although I saw one on eBay for $1200, which is sligthly more reasonable).
[This message has been edited by regebro (edited 07-03-2000).]