Buying and selling at market price is rarely illegal. I think in the USSR it might be?
In the US, selling at the (new higher) market price during a declared state-of-emergency is illegal in most states and territories.
It was legal in USSR for USSR to scalp though, depends on point of view.
In the US, selling at the (new higher) market price during a declared state-of-emergency is illegal in most states and territories.