iMac 24", 3.06, 4GB RAM, 1TB HD plus 1TB Western Digital external drive ?

This is a brilliant machine that has served me extremely well over the last few years. I have been making music on it which is often high intensity stuff for the processor and it handles it with ease. I bought this from new in 2008 and it was top spec at the time. It is the faster 3.06 GHz version and features a 1TB hard drive and 4GB RAM (upgradeable to 16) with a 24" display. I have recently installed OS X Lion on it and I am also including a very neat black 1TB Western Digital external USB2 hard drive which is already formatted for Time Machine back ups etc. This is pictured in the second photo. This iMac is in excellent condition and includes the original box and packaging. These items are available for posting once payment has been received or they can be collected. I can also deliver depending on distance. Postage will be included in the price. Many thanks.