I call shenanigans on this - in fact Bluestreak was the one character that didn't need a + version due to what had already been released. The first MP-18 was based on the animation deco scheme, while both MP-18S and MP-18B are both toy accurate (the former being mainstream G1 accurate and the later being Diaclone/Early-G1 accurate). This one really does push the point dangerously close to jumping the shark.
Robotkingdom never fails but when I tested it out for this one their shipping was hideously expensive. So best either to group in a large order with them or just pick it up on ebay when it's released. I order from ebay sellers Toyspark or freemantoys when ebay is running a site wide sale. They are both based in HK and are large, reputable sellers that pack well etc.