How Much is 2009 Apple MacBook Pro Memory?
2009 Apple MacBook Pro RAM Prices
Expect to pay about $40.00 for an 8GB RAM upgrade kit for the 2009 MacBook Pro which is the most ram you can add to this particular model.
The 2009 Apple MacBook Pro uses PC3 8500 sodimms and you can replace the 4GB of ram that shipped with this model for 8GB RAM KITS to effectively double your performance for this still very capable notebook from apple
If you need help with the memory install, Apple offers instructions on how to upgrade the ram on your 2009 MacBook Pro.