2 single board computers, Raspberry and Odroid, $20 the lot
Please do not ask “is this still available”. Scammers usually do this, and I do not give them a reply. Hardly used, $20 (firm, no offers) for both incl memory card (which is used as hard drive) and cases. One power supply also included. One is a Odroid U3, 1.7GHz Quad-Core processor and 2GByte RAM, for description see https://www.hardkernel.com/shop/odroid-u3/ One is an early Raspberry, I believe a Raspberry Pi 1 B, 700MHz CPU and 512MB RAM, see eg https://howchoo.com/pi/raspberry-pi-models/