Secondipity via Newegg offers the refurbished Acer AZ1-621G-UW11 Intel Celeron 1.83GHz 21.5" 1080p All-In-One Touchscreen Desktop PC
with free shipping
Acer Outlet via Amazon charges the same.
) That's $10 less than our mention of a refurb from two weeks ago and the lowest total price we've seen for any Acer AIO PC. (It's also $159 under the best we could find for a new unit.) It features an Intel Celeron N2940 1.83GHz Bay Trail quad-core processor, 21.5" 1920x1080 (1080p) touchscreen LCD, 4GB RAM, 500GB hard drive, 802.11n wireless, USB, and Windows 8.1 64-bit.
Note: No warranty information is provided.