Prime studios threw down the gauntlet on large expensive statue merchandise, and now Kids Logic have come out and raised it to a whole new level....

For US$13,000 each, they will be releasing an Optimus and a Bumblebee (in TF4 design) at the end of June. (which would be just in time for businesses to buy it for promoting the movie, toys or merchandise - at theatres or Stores)
The base it stands on appears to be about 2m squared, and has lights to illuminate the statue... which are made from Fibre Reinforced Plastic.

They are listed under their "Life Size Scale Collection", but are obviously not life size... imagine the cost of that.