Lastly,
United Gen2 Optimus - This is likely to be a TakaraTomy re-release, like United Rodimus (before the Targetmaster version came out)... mostly to respond to the demand created by a 3rd party accessory (the tanker trailer) that made it impossible for collectors to find or buy the actual toy at a reasonable price. (like Henkei Wildrider/SG Rodimus)
3rd party items may drive up the sales of this second run, but a lot of collectors were forced to pay scalper prices of this toy because a re-release was not expected or guaranteed.
This item is said to be re-released later this month.