I had some of those sets! I actually donated a bunch of parts from that set to Goodwill a year or so ago. I didn't have any complete sets, though.
Oh, that's too bad. Vintage parts can be difficult to find, even on Bricklink. I've learned a lot about collecting this stuff - even your regular old 2x4 blue bricks were different than today, or even a few years later. Older Lego felt different to, when you put pieces together... Tighter clutch, a bit of a squeak even when you press the pieces together. And of course rather more brittle plastic after all those years... It was a bit frustrating figuring it all out, actually (and somewhat surprisingly, the collecting/vintage aspect of the Lego fan community isn't all that well documented), but rewarding too. All the sets you see have nice, minty original parts. I've got a few others in almost complete condition, too.
Oh, and you should look up Goodwill sometime. Rather shoddy business practices, not a great place to donate stuff.
OMG!!! Space Lego was my favorite line as a kid. I had quite a few of those. You gotta get some Blacktron sets too. Those were awesome as well.
Mine too! Blackthorn was a bit after my time, but I do like the Space Police 1 and Futuron stuff, especially that Monorail set... I would get some of the original Blacktron sets if I came across a good deal, though. There's so many tempting lines though... The old Castle and Pirates stuff, especially.
Oh, and I almost forgot - there will be a big Classic Space-style spaceship released this year as part of the Lego Movie line, too! Looks pretty awesome... Complements the old line nicely.