Both the galaxy map commodities pricing feature and the compare functionality in the station services commodities market only show prices at the remote station, not demand, even when you buy trade data. However, I observed the amount of the item you have in cargo when you arrive at the remote station compared to the demand at that station for that item can drastically change the sell price.
If I do a comparison to another station for which I have bought trade data, I could see one commodity has a 2000/unit profit if sold at the other station whereas another commodity has a 1500/unit profit. However, if the 2000/unit profit item has low demand at the other station, which I don't know until I go there, the profit will be less than the 1500/unit profit item if the 1500/unit profit item has high demand at that station. How do I know which one to buy and move? When comparing prices at two remote stations, without having demand numbers, how do I know which one to go to with that commodity?
If I do a comparison to another station for which I have bought trade data, I could see one commodity has a 2000/unit profit if sold at the other station whereas another commodity has a 1500/unit profit. However, if the 2000/unit profit item has low demand at the other station, which I don't know until I go there, the profit will be less than the 1500/unit profit item if the 1500/unit profit item has high demand at that station. How do I know which one to buy and move? When comparing prices at two remote stations, without having demand numbers, how do I know which one to go to with that commodity?