It’s probably safe to say that most players in SAT are producing large amounts of goods per day. I’m not glossing over anything, I acknowledge the increasing cost of the tech tree while moving through each age. I’m also very aware of the cost of SAT GBs. The goods themself aren’t expensive, what you spend them on is. What you’re glossing over is that SAT players produce far more FP than lower age players. This is how you and the players you know are taking advantage. Charging FP is NOT part of the game. That standard was created by greedy players. If it were a part of the game you’d be able to add FP to trades directly in the market, but you can’t.
It’s funny how you say SAT players aren’t interested in lower age goods, then go on to give examples of how they are interested,

Then you go full-blown wishy washy with how some players care and some don’t? But of course most care about FP! The players you play with must be a collection of greedy players, lmao The funny part is how you’re getting offended. You already stated multiple times that there are many different types of players. I have stated my opinion along with the fact that I have never had an issue getting trades accepted. Most importantly, accept without paying some ridiculous FP tax on top of trades.
SAT players charging FP are in fact greedier in your example/question. They choose to charge FP on TOP of trades. Lower age players might not be producing SAT goods, because they can’t, but they’re not getting goods for nothing either. Again, if charging FP on top of trades were part of the game there would be a way to add them directly to trades in the market. That nonsense was player created. Market rates are determined by the ratio between goods only, since there’s no function to add FP. Which means the market doesn’t support any amount of FP, regardless of what players ask for. All you’re referring to with charging FP is player side-deals. Which in my opinion equals player greed.
Returning to your point that there’s many types of players, I agree! There’s those that don’t take advantage and those that do. There are those who are fine with paying when asked and those who aren’t. Just because I think someone is greedy doesn’t necessarily mean that’s a horrible thing. To each their own.