People are silly, they despair for the l2coin boxes (happened with the gear kit events and the pendant box), they raise the price hurting themselves and others, they believe that this way they get an advantage to another buyer.
The same happened at the beginning of the server but in reverse, when the boxes were worth 500-700k because they were desperate for adena (adena that they had nothing to use xD).
since there is a lot of L2coin, the holders will not sell them and will continue to speculate the price