15" Apple MacBook Pro 2009 2.53GHz Core 2 Duo 4GB RAM 250GB MC118LL/A
This used 2009 Apple MacBook Pro sells for about $400 on sale, but if you’re patient you can usually find one for less. This particular model seems to be in pretty good shap and it’s priced out a little more.
Replace the Hard Drive
This particular MacBook Pro comes with 4GB of RAM and a 250GB hard drive. The spinner hard drives on these models were fast in their day but you should add a SSD drive for much faster performance. A 250GB replacement SSD shouldn’t cost you more than $100.00 or so.
Add More RAM
This MacBook Pro ships with 4GB, but about $50.00 would get you double that to 8GB and max out the ram you can can use.
Replace the Battery
This is a 2009 MacBook Pro so chances are the battery has seen some use. 2009 MacBook Pro batteries cost about $35.00 for a third party battery
Need a Charger?
Some computers you buy might not come with a charger, but that’s easily remedied with a new charger for the 2009 Macbook Pro and will cost about $20.00
Total 2009 MacBook Pro Upgrade Cost
Assuming you paid $400 for the MacBook Pro the RAM, Battery and SSD upgrades would set you back another $185.00 bringing the total cost for a 2009 MacBook Pro to just under $600.00 for a maxed out model with a fast SSD. If you do need a charger then you are over that price by another $20.00