4GB [2x2GB] DDR2-800 (PC2-6400) RAM Memory Upgrade Kit for The Apple MacBook 13.3" 2.13GHz Core 2 Duo 5,2 MC240LL/A (Genuine A-Tech Brand) at Amazon.com
Apple MacBook Pro Laptop, 13.3", Intel Core i7, 16GB RAM, 256GB SSD, Mac OSx Catalina, Gray, MPXV2LL/A BTO (Very good condition) - Walmart.com
MacBook 5,1 and MacBook 5,2 - Full Information, Specs | iGotOffer
Amazon.com: Apple 2019 MacBook Pro (16-inch, 16GB RAM, 512GB Storage, 2.6GHz Intel Core i7) - Space Gray : Electronics