It isn't very common that deals and discounts on Apple branded products are available as Apple is usually very expensive for retailers to stock. It is possible that information on discounts and specials can be found on fan websites such as Mac Rumors, and larger online stores such as Amazon may offer discount more often than most stores.
Gainsaver or eCost are two places I'd try.
You can get a refurbished iMac with full warranty on the Apple website for as little as $999. This is as cheap as it gets for a new iMac. Check the refurbished section and if there is none there check back each day.
OBIVOUSLY THE iMAC
No, you can only get that discount on a new iMac not a refurbished iMac.
There is no "iMac Air".
The original iMac was the G3 which came out in (1998). It was followed by the G4 (2002), then the G5 (2004), then the Intel iMac plastic version (2006). The 5th iMac was the aluminum iMac which came out in (August 2007), followed by the iMac Aluminum Unibody (2009). The newest iMac is simply called 2012 iMac and it came out on November 30, 2012.
An iMac is a computer, but a computer is not necessarily an iMac, so they are not the same thing.
The iMac
The original iMac was created in 1998.
No
I do not have a 24" iMac. I have a 20" iMac. Apple no longer sells the 24" iMac. If you will click the Apple logo on the top left of your screen and then click About This Mac then More Info you can find the answer.
The iMac was invented and went on sale in 1998. The iMac as it looks today was introduced in 2006.