Despite the dubious conditions some of the machines were in, it still ended up being good value for the price tag. Some of the motors needed a bit of a wake up from a multimeter jolt. A couple of the battery terminals were corroded and needed some scrubbing. The tower crane had a split gear and the transgripper had two; nothing a little epoxy can't fix. Dozer antenna was a rather simple fix. The RC tower has a single electronic component that's halting the system, but I have a spare tower. =)