Other World Computing (OWC) today announced today that it is offering Memory Upgrade Kits of up to 4.0GB for Apple’s just announced iMac Core 2 Duo 2.0GHz, 2.4GHz and “Extreme” 2.8GHz models. OWC’s Memory is also available in modules and kits of up to 3.0GB for previous iMac models. OWC’s 1.0GB Upgrade Module is US$49.99, 2.0GB Module is $115.99, and 4.0GB Kit is $229 (configured as two 2.0GB memory modules). All memory options are immediately available and shipping. Additional savings is also available for customers who take advantage of OWC’s trade-in program, which provides US$25 cash back for the trade-in per each Apple 1.0GB module.