exchange rate – The price of coinbase Satoshies vs the price of mixed coins

I think that it is not pure fair that any of BTC Satoshies has the same price.

And what do you think about the recently mined coins that perfectly clear, or coins that has some grey history behind them?

So if I would like to buy or sell 1-st or 2-nd step-coins from coinbase transaction, those coins theoretically may be more expensive that coins from any exchange or any kind of a mixer.

It is interesting to know the opinion of community. Thank you!