Diagnostics were "Green Lit" by Apple Store (Jun 2022), reset and upgraded to 10.13 High Sierra.
$150 - iMac 21.5" Core Duo 3.06 (Late-2009) (SN W89513D7B9U) $200 - iMac 21.5" Core i5 (Mid-2011) (SN D25HK08QDHJN) (5mm light scratch on screen, visible only when turned off)