get a laptop from ebay that has no hard drive then pop a hard drive in it and you have a decent PC
http://www.ebay.com/itm/HP-ELITEBOOK-2740P-ICORE-5-2-40-GHZ-2-GIG-RAM-BAETTERY-INCOMPELTE-/221891554785?hash=item33a9c46de1
http://www.ebay.com/itm/New-65W-AC-Adapter-Power-Supply-Charger-for-HP-EliteBook-2530p-2540p-2730p-2740p-/221851893673?var=&hash=item33a7673fa9