$120
Supermicro X9SCL+-F motherboard + Pentium G2120 3.1 GHz CPU + 8 GB DDR3 ECC memory (4 x 2GB)
-Has been running a FreeNAS box for the last few years, then more recently as a router running OPNsense
-Dual Intel gigabit network + IPMI, 3 x PCIe slots, includes IO shield
-Firmware has been updated
https://www.supermicro.com/products/motherboard/xeon/c202_c204/x9scl_-f.cfm

 

$40
Wyse Z50D Thin Client
-AMD G-T56N 1.6GHz Dual Core CPU, 4 GB RAM, power supply and stand, however no hard drive/flash module
-Intel wireless card

 

$75
HP t610 plus Thin Client + Intel dual port gigabit NIC
This is the thick version with space for PCIe card, I'll include the Intel dual port NIC currently in there.
-AMD G-T56N 1.6GHz Dual Core CPU, 4 GB RAM, power supply, however no hard drive/flash module

 

 

 

Can pick up in Palmerston North or ship at your expense.