[quote name='ryanflucas']I'm assuming not, unless you think it will drop to a steady $19.99 in a few weeks?[/quote]Some games at Amazon drop in price down to a certain point, then go back up to "normal" price.
Plenty of track record for this behavior, and you're covered for any price changes for 30 days from date of order.
It could go no cheaper, or it could drop more than once again. Never know. Part of the fun in guessing, of course.