The latest cute big-headed Nendoroid series is Namco pop idol sim franchise iDOLM@STER.
Earlier week the second entry in the Nendorid iDOLM@STER line went on sale with a single set priced at ¥6,000. Here, someone bought 29 sets for a grand total of ¥174,000 (US$1,842).
Maybe this individual is planning on selling them off if they somehow appreciate in value. Or maybe, just maybe, he or she is going to leave them stacked and just stare.