8GB RAM Upgrade for MacBook Pro, iMac, etc for $75 with free shipping | OSXDaily
Apple iMac 27" 5K All-In-One Computer, Intel Core i5, 8GB RAM, 1TB HD & 128GB SSD, Mac OS, Silver, MF886LL/A (Certified Used) - Walmart.com
24" iMac with Retina 4.5K display Apple M1 8GB Memory 256GB SSD (Latest Model) Green MJV83LL/A - Best Buy
Amazon.com: OWC 8GB (2 x 4GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S08P) : Everything Else