There are plenty of sites for sale on Flippa. I think 90% do not sell and most seem to have been built just to be sold ie flipped.
If there is any sites which is giving high valued Bitcoins then please let me know. I have not seen yet any sites where we can get high valued Bitcoins, if there is any sites then it can be scam.or later there will be some problems on those sites. Its better we use the trusted sites only. There are several sites who cheats people too.
Please read the op carefully. It is talking about bitcoin related sites which has high value. No about that you mentioned.
OK, let me go back the topic. Yes, there are some high valued bitcoin related websites, like the top exchanges bitstamp or btc-e, reddit, coinbase, blockchain.info etc.