You can get a Dell T20/HP gen8 for $200 on ebay, including new boxed ones. A XU4 with PSU, case and 16gb eMMC will cost you $100 yes, but for storage you'll al

You can get a Dell T20/HP gen8 for $200 on ebay, including new boxed ones. A XU4 with PSU, case and 16gb eMMC will cost you $100 yes, but for storage you'll also need an external enclosure. The only (4 port) I found on amazon was $120 (and it has its own power brick) So the price is very similar, but the former is server hardware that is more robust, powerful, extensible, and the latter is an android dev board with an unknown amount of "assembly required" time.