Adds `is_biddable` and `sale`
Adds `is_biddable` and `sale`

craigspaeth/metaphysics,mzikherman/metaphysics-1,artsy/metaphysics,mzikherman/metaphysics-1,1aurabrown/metaphysics,mzikherman/metaphysics-1,artsy/metaphysics,mzikherman/metaphysics-1,artsy/metaphysics,craigspaeth/metaphysics,broskoski/metaphysics