OK it's not my fevered imagination
After a series of carrier raids on my town I found a bunch of random troops on sale in my Black Market. I can't remember now what price they were set at as I took them down asap.
Either this is just another bug or some weird exploit
It has happened in the past and enemy have bought stuff from under my nose - I thought it was just me going mad and placing things at random prices into the Black Market then forgetting I'd done so.
Nope - I am still sane. Anyone had similar?