1) Pricing Something in Something.
What is a Price?
"In ordinary usage, price is the quantity of payment or compensation given by one party to another in return for goods or services." WIKI
I can price something in something.
Example 1: A ocean front villa costs 10 Ferrari.
This statement has meaning and everybody will have an opinion on whether this price is to high or to low as the good (villa) and the price (10 ferrari) have value (to society, not necessarily the individual). A Ferrari has value because it is pretty, a form of transport and fast.
Exampe 2: A ocean front villa costs 1000 ounces of gold.
This statement also has meaning and everybody will have an opinion on whether this price is to high or to low as the good (villa) and the price (1000 gold) have value (to society, no necessarily the individual). Golds value is that it is pretty and rare. Everybody can understand the concept of pretty.
Didn't have to go far into this post.
When people judge how fair a trade is for a villa for 1000oz of gold they aren't judging the villa against how "pretty" gold is. If that were the case then something (villa in this case) would always be judged to be worth the exact same amount of gold since gold has remained equally pretty for as long as we've used it. In fact what happens is that people think of what other things the villa is worth as well as what other things the gold is worth to determine if the trade is fair or not. In this case "other things" would be money of some sort most likely (that's essentially it's job after all).
Much of gold's value is speculative, it is not valued based on it's utility or "intrinsic value" as some like to call it. So the villa is being compared to a speculative value placed on something, replace that with it being compared against the speculative value of bitcoins and it's really the same difference.
Thus the "something for something" vs "something for nothing" comparison falls flat in my opinion.