if you're in the u.s. check walmart for clearance desktops. we just picked up (to replace an older neighbor's dead atom-based desktop) a new i3, 8gb, 256gb nvme, slim desktop. inside it had mount points and the cables for two sata (3.5in + 2.5in) and a slim optical (or a 'creatively' mounted second 2.5in). we were going there to pick it up at a bit over $300, as i had seen it there the previous day. surprise! it had just got marked down again to ~ $200. original price was $400.