Answer to: Is it worth fixing up my MacBook Pro 13" Mid 2009?Sorry I'm late to the conversation. Upgrading is better than replacement. I just purchased a battery ($63), 240GB SSD ($145), and USB external enclosure ($12) for less than $250 (crucial website for SSD and amazon for battery) This is for my wife's mid 2009 13" MacBook pro. IMO, you will see more performance gain from an SSD than the 8GB of RAM. Don't get me wrong, 8 would help, but SSD would help more. I ordered wife's MacBook with 4GB of RAM, so going to 8 is not going to show as big of a difference for hers. Check the model number of your hard drive. If it is a 5200 RPM drive, then I would recommend an SSD over RAM. USB enclosure will make the old HDD useable for storage and backup. If you have to do 1 item at a time because of funds, I completely understand. Definitely get that battery done first if it's swelling. Think of it as this, do I put $250 into this laptop or spend $1200+ on a new one? Good luck! I will be replacing parts in about a week.