This seems a good deal with the second 75-300mm lense.
Twin Lens Kit contains:
Canon EOS 500D + EF-S 18-55mm f/3.5-5.6 DC Lens
Canon EF-S 75-300mm f/4-5.6 III DC Lens
The Canon EOS 500D
The 15.1 megapixel EOS 500D offers full HD video shooting, exceptional low-light performance, 3.0-inch clear view LCD with live view, 3.4fps shooting and near instant start-up.
15 Megapixels CMOS sensor
3.0-inch LCD Screen
Full HD Movies
3.4 Frames Per Second
9 Point AF System
High ISO for Great Low Light Performance
Digic 4 Processor for Advanced Noise Reduction
The following information is detailed on Canon's website:http://www.canon.co.uk