HT ALWAYS start with the less popular item first. This way, they can get business from the impatient hyped up buyers and completists. And when those are sold out, then they release the main item.
Just like why they'd release a SWAT Lt. Gordon as opposed to Commissioner Gordon and the TDKR Bat Armory as opposed to the TDK armory.
It is this way for all these types of businesses. But I think as of a few years ago HT has really taken off with this way of marketing to the consumer. I think they seriously swapped ideas with sideshow, that being the HT's figure making ideas for sideshow's marketing. Lol.