Thumb Score: +17 Walmart.com has Pulsar 2-Gallon Oil-free Twin Tank Compressor w/ Accessories & Nail GunAir on sale for $89. Shipping is free, otherwise select in-store pickup. Thanks VarunThakur Note, in-store availability may vary based on location. Deal Editor's Notes & Price Research: The Pulsar 2 Gallon Twin Tank Air Compressor is easy to maintain with an oil-free design.