This is going to sound "judgy," and I am sorry about that. However, please realize that some of my most reliable trading partners are predatory traders. The ethics described in this document are my personal ethics and I do not attempt to impose them on others. Whether or not someone is a "monopoly friend," has nothing to do with how they trade or if they share my ethics. Additionally, now that I think about it, I am a complete hypocrite anyway, and I will prove that at the end. 

To make things simple, I am going to refer to someone I trade with as Komerco. This is a personification, not a real person. 

What I want out of a trade is win / win, nothing less. 
My Personal Trading Ethics

If I am trading with someone, Komerco, for example, I want to make sure she is pleased with the trade, both now and in the future. She should never look back on the trade with regret. 

I do not want Komerco to learn more and remember how unbalanced the trade was. I aim to do balanced trades. 

I do trade Monopoly GO Stickers for stars, in both directions. I trade above or at market value. For five star cards I purchase, I try to pay 20-25% above market value. For fours and fives I sell for stars, I try to sell at market value. 

I do not do 2:1 trades or 1:2 trades (trading for stars being the exception because the cards traded then have no face value other than use for stars, such as three star cards and below). 

I sometimes do complicated trades and I sometimes broker trades for others. If I facilitate, broker or execute a trade, I am then invested. If the trade goes bad or if anyone is unhappy, or worse, scammed, I insure the trade on both ends. All parties I deal with will be pleased when the trade is over. 

I absolutely refuse trades where someone offers me a four star card for a five star card. It happens more often than you would think. I consider it a violation for me to do a "down trade," because the other party is either desperate for dice, or lacks understanding about the relative value of the stickers. 

I do not engage in any form of predatory trading. I do not try to get a superior one for a lesser one just because Komerco does not know something I know. Instead, I tell Komerco what I know, and then negotiate. I don't trade their rarest five star card for my very common five star card, just because they do not know any better. However, at the beginning, when no one really has anything, I would violate that rule and trade any five star for the rarest five star, for example. In the beginning, it really does not matter as much. It is not going to make them feel harmed. Otherwise, if someone offers me Monopoly Tunes for Melodic Haul, I tell them that Melodic often trades 1:1 and Monopoly Tunes 2:1 and I let them know they are trading the rarest card in the album for a common one. They usually do not trade after that. 
Monopoly Go is Not Just a Game

I am chess player. In chess, my only goal is to crush my opponent. I do not look for a win / win in chess. Each player goes in knowing this, wanting this and expecting this. Why? Chess is just a game. 

Monopoly can be played the same way, but not with the same effect. I am not competing with you in Monopoly. It is a game where you build and you are not expected to crush others to do it. We expect shutdowns, heists and such, which are all parameters that define the game and have little psychological effect. 

Predatory trading does not define the game. It can hurt the other person, make them feel duped, violated and victimized. 

At the extreme, if you scam someone,  you did not just win. They experience real loss of assets, something that meant something to them when scammed and continues to mean something to them a week later. It was not just a game event, but left them with a true sense of violation. Many people will cry and nearly all of them will lose trust, both in the game and in humanity. 

While basing play purely on greed is not scamming, it does have some of the same effects. Exploitation is not a con job, but it also is not pan-deterministic. No one playing monopoly has any obligation to play with altruism. It is a capitalist game with a fundamental design of dog eat dog built into it. When I started, I told people that my intention was to "be ruthless." I thought it was only a game and I intended to win.

So, why then, do I try to avoid being the dog eating the other dog? Because it harms the other dog and it did not have to happen for me to feel victorious. I do feel victorious. I can win without eating a dog, and for me that is way more fun than winning the other way. 

I have had well over 100k dice across accounts several times (I don't at the time of this writing). I have never exploited anyone. I have never used airplane mode or dice boosting (though I love, love, love trading with those who do and I am very happy they are on Discord). I got them by studying the game and cooperating with other players. 

I don't play to win. I play because I love the strategy games, and I came to realize that Monopoly Go is one of the most strategic games out there. I have found that cooperating with a network of people can be just as powerful as competing with them. So when you trade with me, I am not playing against you, but with you. 
Epilogue 

Now, while I don't engage in predatory trading, I do enable others who do, so I am mostly a hypocrite. I guess I am at peace with that. I just wanted to make the argument against predatory trading because I don't like it.

An example of enabling would be this: I have a trading partner that routinely gets five star cards for fours star cards. I give her 40 stars for five star cards. She ended up needing vault stars really badly. I donated a large number of stars to her. However, I also donated multiple four star cards because she needed those. I knew what she was going to do with them, and I still did it. Keep in mind, even if my ethics are somewhat hypocritical, the arguments I make in support of them stand on their own. They are either valid or they are not. 

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