YouTube video of the Feso Shop

Well, the rings are interesting. They are stance rings. There's a temporal Marionette ring! The sunglasses seem good too, even though it's only +ATK 5%. The costumes with stats maybe are worthwhile.
Once you max out all of your character's weapons and armor's stats, there's no where else to improve on except wearing these temporal rings and costumes.

Hmm... but it seems like when you kill a treasure monster, it will only give either 1 peso or 10 pesos. Few! Wait. It's 1,000 and 10,000 fesos. So, one stance ring is 300,000 fesos. That's equal to 300 or 30 kills...

Hmm... so let's see... RMT players who buy vis, they need feso instead to buy the stance rings and the numerous temporary costumes with stats. So, to get feso in large amounts, you need to buy GPoints and then convert it to feso. Or, trade your items for other people's fesos.

It might actually stop vis sellers a little.

So let's see... what will granadomart do... their sales of vis will be dropping because their usual customers want fesos instead. So how does granadomart provide fesos... Hmmm... maybe I'm not thinking right

So let's say a new player comes and buys G-Points. The newbie wants to get good armors and weapons. So, he buys premium items and sells them for vis. Or, he converts the G-Points to fesos.

What would make the newbie choose to convert it to fesos instead of vis?

Maybe if the high level players sell their unwanted items for fesos...

Deflation of armor and weapon prices?

Well, it could be the other way around. Old players might demand more fesos instead of selling their gears cheaply.

There's something wrong. I am assuming there's a conversion of G-Points to fesos. What if G-Points can't be converted to fesos? I have to research more on this.

Well, it seems like you need to buy FT and AT passes because there are more treasure monsters in those areas that give the stones that are exchangeable for fesos.

And according to what I read, there will be another premium dungeon. I wonder what it is.