Add a popup to async trade for maps, beasts etc.

There's a huge influx of people trying to take advantage of the new async trade with t17 maps and beasts, an idea could be to have the same popup from the currency exchange with an unfavorable trade ratio, if the price of the next T17 fortress map for example, is different that the fortress map you originally teleported there for.

Example:

teleports to a HO to buy a T17 fortress map for 35c, the guy has 10+ fortress maps listed for sale, but one of them is listed for 350c instead. If you were to click on this map, a popup would come, warning you that the price is different than the other Fortress map you have purchased.

Just an idea. loving async trade, just wish people weren't trying to scam.