Search Engine Optimization

I was wandering how much value there is in the websites I own? The unwritten premise in that statement is how do I value them and which is worth the most? I assume the one that would give me the greatest return would be if I put the Royal Caribbean Cruise up for sale, which is probably the valuable, so how much would I get for it?

With more than 4,000 visitors a month at 25p a click (using PPC as a way of determining a value) would value the site at £1000 per month (the amount a company would need to spend to get the same number of hits). In business often 1.5 times income is a good place to start, so this would mean that the Royal Caribbean site could be worth £18,000. The real cost per click is about 40p (using AdWords) so perhaps it is worth more?

This post will be added to in the morning but a passing note, if I was offered £10,000 would I sell? I will let you know tomorrow.