Counter Culture Labs has a free full size -80 freezer available. It is actually an older -86 C freezer but it now "only" comes down to -80 C. It's working but it should really have a new air filter installed before being put to use (nothing special, just to prevent dust getting into the compressor).
We're getting a slightly newer model. What we need in return is for you to pick up our new freezer at a lab at UC Berkeley, bring it to Counter Culture Labs in Oakland, and then of course pick up our old freezer for your own use.