[H] Remanufactured toner shelf life

[Winterlight]

I am placing a order with monoprice and happened to notice that they 
sell their own remanufactured toner. I have a color laser that is 
going to need to replace toner sometime in the next 9 -18 months so I 
am thinking of ordering a set.. the price, as always at monoprice, is 
very good. A Google search shows the shelf life at around 2 years but 
it can much longer. Anybody have much real world experience with 
storing toner... how long is the shelf life?