Buy now because the price will increase significantly, you can always install later, plus new upgrades and additions are free…
upgrades and new versions are always FREE, 1.3.5 BETA was released TODAY !!!
if buy now don’t use the support
use it when 1.3.5 comes out officially
the support period starts when you ask them a question not when you buy 
also i doubt the price will actually go down in 1.3.5 , the chances it will go it up is higher