Mac sales have slumped. That is bad news for Tim Cook but great news for Mac buyers because Apple Authorized Reseller Amazon has taken a prejudicial knife to prices — get the MacBook Air or MacBook Pro (Retina, too) of your dreams for up $149.05 off the regular suggested retail price.

• MacBook Air
— 11-inch 1.70GHz 64GB, $899.99 (999)
— 11-inch 1.70GHz 128GB, $999.99 (1099)
— 13-inch 1.80GHz 128GB, $1,099.99 (1199)
— 13-inch 1.80GHz 256GB, $1,399.99 (1499)

• MacBook Pro
— 13-inch 2.5GHz, 4GB, 500GB, $1,090.59 (1199)
— 13-inch 2.9GHz, 8GB, 750GB, $1,399.99 (1499)
— 15-inch 2.3GHz, 4GB, 500GB, $1,699.99 (1799)
— 15-inch 2.6GHz, 8GB, 750GB, $2,049.99 (2199)

• MacBook Pro with Retina Display
— 13-inch 2.5GHz, 8GB, 128GB, $1,599.99 (1699)
— 13-inch 2.5GHz, 8GB, 256GB, $1,899.97 (1999)
— 13-inch 2.9GHz, 8GB, 256GB, $2,049.99 (2199)
— 13-inch 2.9GHz, 8GB, 512GB, $2,649.99 (2799)
— 15-inch 2.3GHz, 8GB, 256GB, $2,049.95 (2199)
— 15-inch 2.6GHz, 8GB, 512GB, $2,649.98 (2799)

All of the above MacBook Air and MacBook Pro models are Amazon Prime products, so you get free second-day shipping — that’s pretty cool. Additionally, although Amazon is collecting state taxes in more states, you might be among the lucky few that continue to slip through the cracks (yeah, Pennsylvania!).