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Best Buy: Apple 21.5" Certified Refurbished iMac with Retina 4K Display Intel Core i3 3.6GHz 8GB Memory 1TB HDD (2019) Silver MRT32LL/A
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Review: Apple's 21.5-inch iMac with 4K Retina display is great, but skip the slow HDD model | AppleInsider
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Apple iMac with Retina 4K Display (21.5-inch, 8GB RAM, 256GB SSD Storage)(New-Open-Box) - Walmart.com
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Amazon.com: Apple 21.5" iMac with Retina 4K Display Desktop, Intel Core i5, 8GB RAM, 1TB HDD - MRT42LL/A (Renewed) : Electronics
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Amazon.com: Apple iMac 21.5-inch Retina 4K Display MK452LL/A - Intel Core i5 3.1GHz, 8GB RAM, 256GB SSD - Silver (Renewed) : Electronics
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