PLEX prices are still dropping with today's Jita prices at 787 million in sell orders and 777 million in buy orders. That's only a 10 million ISK spread, less than the minimum possible combined taxes + broker fees to buy and sell one PLEX at those prices, which is an indication of a market still trending downwards.
Some others insist it's just a temporary effect caused by a bursting bubble, Christsmas PLEX sales or the recent influx of new players on trail accounts and prices will soon go back up again.
I disagree, I fully expect the downward to trend to continue. If the existing trend continues at the same rate PLEX will be selling for around 650 million each in another month.
Starting tomorrow (Jan 1st, New Year's Day) the new multi-boxing input policy goes into effect and that's the main factor behind the drop in PLEX prices since around Nov 24.
If CCP isn't very strict about enforcing the new policy prices will start going back up again before long. The multi-boxers certainly will test how effective CCP is in enforcing it.
Have a Happy New Year!