Let me say/explain it in layman terms.

There are 2 persons A and B who want to flip identical sites.
Both of them have sites on same niche and same number of unique articles for their websites.
Both have not got their site indexed yet.
A sells it for 50$ and B sells it for 150$.

Now why did B get 100$ more than A even though they have a similar site????

Any website flipper who will read this post would have realized by now. For others, B added more value to his site than A.

How did he add more value to his site or How one can add more value to his site???

What i would do is buy a paid wordpress themes with developer license.
For example revolution tech, woothemes, ithemes etc.
The develper pack costs anywhere between 79$ to 500$.

Now the develper pack investment can be made back immediately after flipping 1-3 sites.
But the best thing is you can continue using it for as many sites as you wish.
The developer pack themes are worth an investment and will pay back more than you expect.

Now while listing my site I would mention that the theme used is Paid theme
and auction winners will be getting the exact theme along with the whole site.

What is special about developer pack themes along with installing on any number of
domains it can be transferred along with the sites.

One more method I use to add more value to my site is, I offer free directory submission to people whole BIN it.
No, I wont submit to directories but I will outsource the work for around 15$ at digitalpoint forums.

So, on a whole I would be making 85$ profit more by adding more value to my site.

So, take action now and get a developer pack fast.