Auto-Vox via Amazon offers the Auto-Vox Automatic 12V Portable Air Compressor
for $39.99. Coupon code "PC2DQ5D8" cuts it to $27.99
. With free shipping
, that's the lowest price we could find by $12. It features auto shut off, three button operation, 100 maximum PSI, LED flashlight, and a 12-foot power cord. Deal ends November 1.