I retrieved out of the garage a couple LEGO sets from my youth.
Tri-Star Voyager - Spaceship that separates into two modules. Two small clear red 1x1 smooth tiles broke, prolly because they were brittle from age. =(
From the $5.49 price tag, this 66-piece set came out to about $0.08/piece. Things haven't changed
too much in about 30 years.
Space Supply Station - I remember loving this because it hit all the right points for me: land vehicles, air vehicles, and base structure. No broken pieces in this one!
I had some older sets (including the Beta-1 Command Base), but I'm not sure if I kept them. =/
Will have to do some more digging in the garage.