Seven refurbished Mac models are currently being offered at Apple's online store for $1399 or less. Starting at $849 is the 20-inch 2.4GHz iMac with 1GB of memory and 250GB hard drive. The 2.66GHz iMac with 2GB of memory and 320GB hard drive is priced at $999. Also priced at $999 is the 1.6GHz MacBook Air with 2GB of memory and 80GB hard drive. For $1099 is the unibody 2.0GHz MacBook with 2GB