Amazon offers the California Air Tools 4.6-Gallon Twin Tank Air Compressor, model no. CAT-4610A, for $105.99 with free shipping. That's the lowest total price we could find by $144. Features include a 60-decibel operation, oil-free pump, 1-horsepower motor (2-horsepower peak), and two quick-release connectors.
Note that this item ships in one to two months.