Lost 80+ divine in bulk buying nightmare maps because of "mines landing" trade scam + SUGGESTION GGG

I guess I am not the only one and that other people got scammed, but this is a warning for others players too:

Buying maps in bulks too quickly under the pressure of others players buying them before you, then buying 1 for 41 divines instead of 41 chaos, because the seller -deliberately mixed up price on the whole tab of 12x12- full of maps with different prices: 41c, 42c, etc 47c then 1/10 42c (which is a good price) is 42 D instead. So this was definitely made up to steal people.

There is a warning but it's not so easy to distinguish the difference in-between the CHAOS icon and the DIVINE icon, especially when rushing for bulk.

GGG's Path of Exile just reminded me how sad and pathetic people can act to each others. Letting you consider how it hurts the feeling about the whole game, point to waste more time with it, and about buying more MTXs.

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SUGGESTION: HIGH/EXCEPTIONAL TRADE VALUE MSGBOX OPTION:
Introduce a configurable warning option when a transaction superior to X divine(s)/main currency equivalent is about to happen; a threshold somehow. Faustus will easily know this said equivalent btw, when he's not busy making his cut.

Agreed, and even with the existing warning, if the specific map you clicked on to visit hideout is gone, the rest of the tab won't give you any warnings (or it's still buggy). So even without mixing up all the prices it's still very easy to get landmined. A couple landmines and I lost all desire to continue playing after having days of farming disappear in an instant.

Edit: My preferred solution, in addition to an improved warning system, is allowing you to either:
a) 'lock' currency in a tab/tabs that cannot be used for trading or
b) have a feature to flag a tab as useable for settling trades (much like affinities are a flag for where to send loot).

This will give a much larger level of protection to all future abuse strategies that people think of by simply allowing players to only make a reasonable amount of my currency available for transactions to begin with.

I have definitely seen this warning popping up when I try to buy something else that is of different price than the one I travelled for, so I can vouch that it exists. It saved me a few from a few landmines when I was farming invitations.
Whether or not it is bugged in some condition I can not say. Last time I saw it pop up is today.

Other than that, a few suggestions for you:
1. Put the price you are expecting into your regex. For example: "7 chaos", it will dim out the div mines. This however do not save you from chaos mines such as "777 chaos", which is where the second point come into play if you can implement it.
2. Hide your currency somewhere. For example, list a few mirror purchasing with your current currency, keep the rate exorbitant so no one will take it. For example, if you have 1000 divs, try set an order of 10 mirror with 1000 divs. Only keep a small amount of tradable currency on you when doing bulk buying.