The Industrial Air 20 Gallon Oil Lube Belt Drive Air Compressor is only $299.99 at Farm and Fleet. Farm and Fleet is only located in Illinois, Iowa, and Wisconsin.
Choose in store pickup, shipping kills the deal.
For those outside of this area, you could attempt price matching at HD ($519.99 there). Here is the link to the one they have: https://www.homedepot.com/p/Indus.../203476501
I have had this for a couple years and love it, it's pretty quiet and runs great every time I use it. I mostly use it for an impact driver but have used a cutoff tool a few times as well, and it never disappoints.
One piece cast iron crankcase
Thermally stable cast iron cylinder body
Machined cast iron valve plate
Automotive style ball bearings
Durable stainless steel reed valves
Oil level sight glass
Easily accessible oil fill
10" Cast iron balanced flywheel
Heavy duty induction motor allows for maximum performance and efficiency
20 Gallon ASME portable tank
Pneumatic tires for maximum portability
Dual voltage motor is wired for standard 120 volt outlet, and may also be converted for 240 volt application
Includes a quick-set regulator, tank and working pressure gauges, quick connect air outlet and on / off switch
6.2 CFM @ 40 PSI:6.2
CFM @ 90 PSI:5.3
Tank Capacity: 20 Gallon
Power: 1.6 Running HP
Max PSI: 135
Weight: 186 Lb