I dare say the weather is keep prices high at the moment, but the dealer needs to remember it's a V8!
Did you go and look at this 2003 blue one in person?
If you are still interested, don't forget to give it a very long test drive, and get them to wash and dry it before you check it over. Check the vast array of electrics and gadgets. Make sure the air suspension goes up and down properly,and the sunroofs are not leaking.
That blue really does show up the marks as well, hence the need to wash before inspection.
I know it sounds picky, but 7500-8000 is a fair sum. Don't be afraid to crawl all over it, if he's a good dealer, he will understand.